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Updated: Oct 20, 2024

What to know about Allium sativum before using it medicinally

Allium sativum plant

Allium sativum, commonly known as garlic, is a widely used herb in traditional medicine for its numerous health benefits.

It is primarily employed to help manage cardiovascular health conditions, such as high blood pressure and cholesterol levels, as well as to aid in the prevention of certain types of cancer, including colorectal and stomach cancer. The main health benefits of garlic include its antibacterial, antiviral, and antifungal properties, which contribute to its ability to boost the immune system and reduce inflammation. The therapeutic properties of garlic are attributed to its rich content of bioactive compounds, including allicin, diallyl disulfide, and S-allylcysteine, which have been shown to exhibit antioxidant, anti-inflammatory, and cardiovascular-protective effects.

In herbal medicine, garlic is typically prepared as a fresh or dried bulb, and is often used to make a variety of preparations, including teas, capsules, and oils, which are used to support overall health and well-being.

The following article explains in detail what are the medicinal uses of Allium sativum, its health benefits, therapeutic properties, bioactive compounds, used parts, and herbal preparation. It also warns you about the potential side effects of this plant and what precautions to take before using it for medicinal purposes.

ARTICLE SUMMARY: The table below summarizes the most crucial information about Allium sativum provided in the article below, which is useful if you are in a hurry and don't have time to dig deep into the very detailed content that follows.

Medicinal AspectSummary
UsesDiabetes, Asthma, Inflammation, Hypertension, Gastritis, Bronchitis, Cancer, Cough, Ulcers, Cardiovascular disease
BenefitsReduces inflammation, Lowers blood pressure, Fights cancer cells, Has antibacterial properties, Boosts immune system, Improves digestion system, Reduces risk of heart, Has anti-inflammatory effects, Reduces risk of cancer, Has antioxidant properties
PropertiesAntimicrobial, Antioxidant, Anti-inflammatory, Antibacterial, Anticancer, Antiviral, Analgesic, Antiplatelet, Vasodilatory, Anticough
ConstituentsAllicin, Quercetin, Kaempferol, Phenolic acids, Flavonoids, Saponins, Diallyl disulfide, Isorhapontigenin, Organosulfur compounds, Sulfenic acid
PartsRoots, Flowers, Leaves
PreparationsCapsule, Tincture, Salve, Tea, Oil, Suppository
Side EffectsExperiencing nausea, Developing diarrhea, Showing allergic reactions, Suffering from abdominal pain, Experiencing vomiting, Suffering from headaches, Developing dyspepsia, Experiencing dizziness, Suffering from flatulence, Experiencing bleeding
PrecautionConsult a doctor before use, Avoid in pregnancy and breastfeeding, Monitor blood sugar levels, Be cautious with bleeding disorders, Use in moderation, Avoid with anticoagulant medications, Watch for allergic reactions, Interact with diabetes medications, Be cautious with liver disease, Report to doctor any side effects

BONUS CHEATSHEET: The cheatsheet below illustrates the most important medicinal aspects of Allium sativum. Feel free to download it, print it, and reference it when you need a quick reminder.

Allium sativum plant cheatsheet

What are the main medicinal uses of Allium sativum?

The main medicinal uses of Allium sativum are for cough relief due to its expectorant properties, which are attributed to the presence of compounds such as allyl sulfide and quercetin, that help to thin mucus and promote its expulsion from the body.

Allium sativum is also used to alleviate digestive issues like diarrhea, which is caused by its ability to inhibit the growth of pathogenic bacteria and viruses, as well as its anti-inflammatory properties that reduce inflammation in the gut. The plant's antimicrobial properties, particularly the presence of allicin and its derivatives, also make it effective in treating colds and fevers by reducing the load of pathogens in the body. Additionally, Allium sativum has been shown to reduce inflammation and oxidative stress, which can contribute to cardiovascular disease, making it a potential therapeutic agent for this condition.

Furthermore, its antioxidant and anti-carcinogenic properties, including the presence of sulfur compounds and polyphenols, may also contribute to its potential role in cancer prevention and the treatment of respiratory issues, such as bronchitis and asthma, and sore throat.

The following illustration give a summary of the main medicinal uses of Allium sativum.

uses of Allium sativum

The list below provide more details on why Allium sativum is used to alleviate the health conditions mentioned in the illustration above.

The table that follows gives an overview of what are the most common health conditions that are treated with Allium sativum, in each of the major medicinal systems.

Medicinal SystemConditions Treated
Modern Western MedicineDiabetes Management, Cancer Prevention, Inflammation Reduction, Cardiovascular Disease, High Blood Pressure, Hypertension, Asthma, Antibacterial Properties, Atherosclerosis, Arthritis, Digestive Issues, Gastritis, Respiratory Infections, Antifungal Properties, Influenza, Stomach Ulcers, Gastroesophageal Reflux, Gastroenteritis, Antiviral, Sinusitis
Traditional Chinese MedicineDiabetes, Inflammation, Hypertension, Asthma, Cancer, Gastritis, Cough, Bronchitis, Digestive Issues, Ulcers, Cardiovascular Disease, Sore Throat, High Blood Pressure, Cancer Prevention, Arthritis, Gout, Gastroenteritis, Diarrhea, Pneumonia, Fever
Ayurvedic MedicineDiabetes, Inflammation, Asthma, Gastritis, Bronchitis, Cancer, Hypertension, Cough, Ulcers, Infections, High Blood Pressure, Cold Sores, Skin Infections, Cardiovascular Disease, Digestive Issues, Gastroenteritis, Arthritis, Respiratory Tract Infections, Menstrual Disorders, Respiratory Infections
Unani MedicineDiabetes, Asthma, Hypertension, Inflammation, Gastritis, Cough, Bronchitis, Fever, Arthritis, Cancer, Ulcers, Rheumatism, Skin Infections, High Blood Pressure, Cardiovascular Diseases, Hyperlipidemia, Indigestion, Atherosclerosis, Skin Conditions, Influenza
Homeopathic MedicineInflammation, Diabetes, Hypertension, Asthma, Cancer, Ulcers, Bronchitis, Gastritis, Digestive Issues, Fungal Infections, Cardiovascular Disease, Cough, Atherosclerosis, High Blood Pressure, Osteoporosis, Gout, Arthritis, High Cholesterol, Common Cold, Indigestion

Modern Western Medicine

In modern western medicine, Allium sativum is used to manage diabetes through its antioxidant properties and flavonoids that regulate blood sugar levels.

The plant is also being researched for its potential in cancer prevention, as its compounds have shown to inhibit the growth of cancer cells and induce apoptosis. Additionally, Allium sativum is used to reduce inflammation, which contributes to cardiovascular disease, and its flavonoids and polyphenols have been shown to lower high blood pressure and prevent hypertension. Furthermore, its antibacterial properties help to alleviate symptoms of asthma, while its antifungal properties aid in preventing atherosclerosis, a condition characterized by the buildup of plaque in arteries.

Allium sativum is also used to treat various gastrointestinal issues, including arthritis, digestive issues, gastritis, stomach ulcers, gastroesophageal reflux, gastroenteritis, and respiratory infections, such as influenza, sinusitis, and respiratory infections with antiviral and antibacterial properties.

Traditional Chinese Medicine

In traditional chinese medicine, Allium sativum is used to treat various health conditions, including diabetes by regulating blood sugar levels and enhancing insulin sensitivity.

The plant's anti-inflammatory properties are also utilized to alleviate inflammation and reduce the risk of cardiovascular disease, which is often associated with hypertension. Furthermore, Allium sativum is used to treat respiratory conditions such as asthma and bronchitis by reducing airway constriction and inflammation, as well as cough and pneumonia by soothing the respiratory tract. Additionally, the plant has been traditionally used to prevent cancer by inhibiting cancer cell growth and inducing apoptosis, while also treating gastritis and ulcers by protecting the gastric mucosa and enhancing digestion.

Allium sativum is also employed to treat digestive issues, diarrhea, gastroenteritis, fever, gout, sore throat, and arthritis by modulating the immune system and reducing oxidative stress.

Ayurvedic Medicine

In ayurvedic medicine, Allium sativum is used to treat various health conditions, including diabetes, where its active compound allicin has been shown to improve insulin sensitivity and glucose uptake.

Allium sativum's anti-inflammatory properties make it effective in reducing inflammation, which is a contributing factor to chronic diseases such as asthma and gastritis. The plant's expectorant properties also help in relieving bronchitis, bronchitis symptoms such as cough can be managed with Allium sativum, and its antioxidant properties may inhibit the growth of cancer cells. Additionally, Allium sativum has been used to treat high blood pressure, ulcers, infections, high blood pressure, cold sores, skin infections, and cardiovascular disease due to its vasodilatory and antimicrobial effects.

Furthermore, Allium sativum's antiviral and antibacterial properties have also been effective in treating digestive issues, gastroenteritis, arthritis, respiratory tract infections, menstrual disorders, respiratory infections, and other conditions.

Unani Medicine

In unani medicine, Allium sativum is used to treat diabetes by regulating blood sugar levels, asthma due to its bronchodilatory properties, and hypertension by reducing blood pressure.

The plant is also effective in managing inflammation, gastritis, and cough due to its antibacterial and anti-inflammatory properties, and is used to treat bronchitis by reducing congestion and mucus production. Additionally, Allium sativum is used to reduce fever, alleviate symptoms of arthritis, and combat cancer by inhibiting the growth of cancer cells. Its antiseptic and antibacterial properties also make it useful in treating ulcers, rheumatism, skin infections, and high blood pressure.

Furthermore, Allium sativum is used to prevent cardiovascular diseases, hyperlipidemia, and atherosclerosis by reducing triglycerides and LDL cholesterol levels, and is also effective in treating indigestion, skin conditions, influenza, and other conditions.

Homeopathic Medicine

In homeopathic medicine, Allium sativum is used to treat inflammation by reducing swelling and pain, while also addressing diabetes through its potential to lower blood sugar levels.

The plant's antiseptic and antibacterial properties make it effective in treating hypertension, as well as asthma, which benefits from its bronchodilatory effects. Additionally, Allium sativum has been found to have antitumor and anticancer properties, helping to prevent the growth of cancer cells, and it is also used to treat ulcers, bronchitis, gastritis, and digestive issues by promoting the healing of the stomach lining and reducing inflammation. Furthermore, the plant has been traditionally used to treat fungal infections, cardiovascular disease, cough, atherosclerosis, high blood pressure, osteoporosis, gout, arthritis, high cholesterol, common cold, indigestion, and ulcers by inhibiting the growth of pathogens and improving circulation.

Its therapeutic properties also help to reduce the risk of complications associated with these conditions.

What are the primary health benefits of Allium sativum?

Allium sativum reduces inflammation by inhibiting the production of pro-inflammatory enzymes, such as cyclooxygenase-2, which are responsible for the inflammation process.

Lowering blood pressure is another benefit of Allium sativum, as it contains compounds like allicin that have a vasodilatory effect, reducing peripheral resistance and cardiac workload. Allium sativum fights cancer cells by inducing apoptosis and inhibiting cell proliferation, particularly in breast, prostate, and lung cancer cells. Its antibacterial properties are attributed to the presence of sulfur compounds, which have been shown to inhibit the growth of various bacteria, including E. coli and Staphylococcus aureus.

Allium sativum also boosts immune system function by stimulating the production of white blood cells and activating natural killer cells, thereby improving digestion system function and reducing the risk of heart disease, which is partly due to its anti-inflammatory effects that reduce the risk of cancer and have antioxidant properties.

The following illustration give a summary of the primary health benefits of Allium sativum.

benefits of Allium sativum

The list below provides more details on why Allium sativum offers the health benefits mentioned in the illustration above.

The table that follows gives an overview of what are the primary health benefits of Allium sativum for each of the major body system.

Body SystemHealth Benefits
Circulatory SystemReduce Blood Pressure, Improve Circulation Flow, Prevent Blood Clots, Lower Cholesterol Levels, Reduce Inflammation Response, Increase Red Blood Cells, Boost Immune System, Regulate Heart Rate, Protect Against Atherosclerosis, Enhance Oxygen Delivery
Digestive SystemReduce Inflammation, Prevent Ulceration, Relieve Constipation, Heal Gastritis, Treat Diarrhea, Prevent Colon Cancer, Stimulate Digestion, Reduce Bloating, Soothe Irritation, Prevent Diverticulitis
Endocrine SystemRegulates Hormones, Supports Thyroid, Reduces Insulin, Lowers Cortisol, Stabilizes Blood Sugar, Balances Adrenal, Treats Hypothyroidism, Improves Glucose, Boosts Metabolism, Protects Pancreas
Integumentary SystemProtects Skin, Reduces Inflammation, Fights Bacterial, Repairs Damage, Improves Elasticity, Boosts Antioxidant, Soothes Irritation, Cleanses Acne, Regenerates Cells, Moisturizes Dryness
Lymphatic SystemBoosts Lymphatic Flow, Enhances Detoxification Process, Supports Immune Function, Reduces Inflammation Levels, Improves Circulation Patterns, Stimulates Lymph Node Activity, Fights Cancer Cells, Increases Antibody Production, Reduces Swelling Quickly, Regulates Body Fluids
Musculoskeletal SystemReduces Inflammation, Prevents Bone Loss, Relaxes Muscles, Fights Arthritis, Improves Circulation, Heals Joints, Relieves Pain, Soothes Nerves, Treats Gout, Promotes Flexibility
Nervous SystemProtects Neurons, Reduces Inflammation, Improves Memory, Enhances Focus, Regulates Mood, Prevents Oxidation, Supports Detox, Reduces Anxiety, Promotes Relaxation, Boosts Energy
Reproductive SystemBoosts Fertility, Enhances Ovulation, Improves Hormonal Balance, Regulates Menstrual Cycle, Fights Male Infertility, Increases Sperm Count, Stimulates Ovarian Function, Supports Embryo Development, Reduces Pregnancy Complications, Maintains Uterine Health
Respiratory SystemRelieve Congestion, Prevent Inflammation, Reduce Coughing, Soothe Irritation, Clear Mucus, Protect Airways, Relax Bronchi, Prevent Infections, Reduce Swelling, Ease Breathing
Urinary SystemPrevents Kidney Stones, Reduces Urine Infections, Alleviates Bladder Inflammation, Treats Urinary Tract Infections, Relaxes Urinary Muscles, Prevents Kidney Failure, Cures Prostatitis Symptoms, Tones Kidney Function, Reduces Urine Frequency, Prevents Bladder Cancer

Circulatory System

Allium sativum reduce blood pressure by exerting a vasodilatory effect due to its antioxidant properties, which contribute to the reduction of oxidative stress.

Improve circulation flow is facilitated by the ability of Allium sativum to inhibit the formation of blood clots, thereby preventing blood clots and reducing the risk of cardiovascular events. Lower cholesterol levels can be achieved through the inhibition of HMG-CoA reductase by the antimicrobial and antioxidant compounds present in Allium sativum, thus reducing the risk of atherosclerosis. The anti-inflammatory properties of Allium sativum reduce inflammation response by inhibiting the production of pro-inflammatory cytokines, which in turn increase red blood cells and boost immune system function.

The antioxidant and vasodilatory effects of Allium sativum regulate heart rate and enhance oxygen delivery by improving circulation flow and protecting against atherosclerosis.

The medicinal benefits of Allium sativum on the circulatory system help relieving the health conditions listed below.

Digestive System

Allium sativum reduce inflammation in the digestive system due to its anti-inflammatory properties, which also contribute to preventing ulceration by protecting the stomach lining from acid damage.

The plant's antimicrobial properties help relieve constipation by promoting the growth of beneficial gut bacteria and preventing pathogenic bacteria from overpopulating the gut. Additionally, the antioxidant properties of Allium sativum heal gastritis by neutralizing free radicals that cause oxidative stress, while its anti-inflammatory properties also treat diarrhea by reducing inflammation in the intestines. Furthermore, Allium sativum prevent colon cancer by inhibiting the growth of cancer cells and stimulating apoptosis, a process in which damaged cells are destroyed, and its anti-inflammatory properties stimulate digestion by reducing inflammation in the digestive tract.

Moreover, the plant's antioxidant properties soothe irritation in the digestive tract and reduce bloating, and its antimicrobial properties also prevent diverticulitis by reducing the risk of bacterial infections in the diverticula.

The medicinal benefits of Allium sativum on the digestive system help relieving the health conditions listed below.

Endocrine System

Allium sativum regulates hormones by modulating the expression of genes involved in hormone synthesis, while also exhibiting antioxidant properties that neutralize free radicals.

It supports thyroid function by containing compounds that stimulate the activity of thyroid peroxidase, an enzyme crucial for thyroid hormone production. Additionally, Allium sativum reduces insulin resistance and lowers cortisol levels by inhibiting the activity of key enzymes involved in glucose and cortisol metabolism. Furthermore, it stabilizes blood sugar levels by increasing the sensitivity of cells to insulin, and balances adrenal function by regulating the production of adrenal hormones.

Allium sativum also treats hypothyroidism by increasing thyroid hormone production, improves glucose metabolism, boosts metabolism by stimulating the breakdown of fats, and protects the pancreas by reducing oxidative stress and inflammation.

The medicinal benefits of Allium sativum on the endocrine system help relieving the health conditions listed below.

Integumentary System

Allium sativum protects skin by providing a layer of antimicrobial protection against external pathogens and free radicals, while also exhibiting anti-inflammatory properties that soothe irritation and reduce inflammation in the skin.

It fights bacterial infections through its antimicrobial properties, which also cleanse acne by eliminating p. acnes bacteria that cause breakouts. Allium sativum repairs damage to the skin by stimulating collagen production and regenerating cells, which in turn improves elasticity and moisturizes dryness caused by aging or environmental factors. Furthermore, the antioxidant properties of Allium sativum boost antioxidant levels in the skin, neutralizing free radicals that cause oxidative stress.

By combining these properties, Allium sativum provides a comprehensive approach to maintaining healthy skin and promoting a radiant complexion.

The medicinal benefits of Allium sativum on the integumentary system help relieving the health conditions listed below.

Lymphatic System

Allium sativum boosts lymphatic flow by increasing the production of saponins, which enhance lymphatic circulation, while its anti-inflammatory properties reduce inflammation levels, allowing for efficient lymphatic transport.

Enhancing detoxification process is achieved through the antioxidant and antimicrobial properties of Allium sativum, which protect the body from oxidative stress and eliminate pathogens that can impede lymphatic function. Supporting immune function is also vital, and Allium sativum's immunomodulatory properties stimulate antibody production and activate immune cells, thereby improving circulation patterns and reducing swelling quickly. The anti-inflammatory and antioxidant properties of Allium sativum also stimulate lymph node activity and fight cancer cells by inhibiting the growth of cancerous cells.

By regulating body fluids and maintaining proper lymphatic function, Allium sativum helps to improve immune function and reduce the risk of various diseases, including cancer, while also reducing inflammation levels.

The medicinal benefits of Allium sativum on the lymphatic system help relieving the health conditions listed below.

Musculoskeletal System

Allium sativum reduces inflammation by exhibiting anti-inflammatory properties due to the presence of compounds like diallyl disulfide and diallyl trisulfide, which inhibit the production of pro-inflammatory cytokines and enzymes.

Preventing bone loss is facilitated by its ability to increase osteoblast activity and bone density through the stimulation of calcium and phosphorus absorption, while also suppressing the activity of osteoclasts. Relaxing muscles is attributed to its muscle-relaxing effects, which are mediated by the inhibition of acetylcholinesterase, an enzyme that breaks down the neurotransmitter acetylcholine, responsible for muscle contraction. Fights arthritis through its anti-inflammatory and antioxidant properties, which protect against oxidative stress and joint damage.

Allium sativum also improves circulation, heals joints, relieves pain, soothes nerves, treats gout, and promotes flexibility, primarily due to its vasodilatory and antioxidant effects, which enhance blood flow and reduce oxidative stress in the musculoskeletal system.

The medicinal benefits of Allium sativum on the musculoskeletal system help relieving the health conditions listed below.

Nervous System

Allium sativum protects neurons through its neuroprotective properties, which prevent neurodegenerative diseases like Alzheimer's and Parkinson's.

This plant reduces inflammation in the nervous system by exhibiting anti-inflammatory properties, thereby alleviating symptoms associated with neurodegenerative diseases. Allium sativum improves memory due to its nootropic effects, which enhance cognitive function and promote the formation of new neurons. The antimicrobial properties of Allium sativum also enhance focus by eliminating pathogens that can disrupt brain function, and its antioxidant properties regulate mood by balancing neurotransmitter levels.

Allium sativum prevents oxidation, supports detox by promoting the elimination of toxins, reduces anxiety by modulating the activity of the GABA receptor, and promotes relaxation by stimulating the release of serotonin and promotes energy by increasing ATP production through its stimulatory effects on cellular respiration.

The medicinal benefits of Allium sativum on the nervous system help relieving the health conditions listed below.

Reproductive System

Allium sativum boosts fertility due to its antimicrobial and antioxidant properties, which create a healthy environment for sperm production and ovulation.

Enhancing ovulation is another benefit of Allium sativum, as its anti-inflammatory and antispasmodic properties help to regulate the release of eggs from the ovaries, improving hormonal balance in the process. Allium sativum regulates menstrual cycle by stimulating the uterine muscles and reducing inflammation, which in turn fights male infertility by preventing oxidative stress and DNA damage to sperm cells. Increasing sperm count and stimulating ovarian function are also attributed to Allium sativum's ability to reduce oxidative stress and its antioxidant properties, supporting embryo development by creating a conducive environment for implantation.

Maintaining uterine health is essential for reducing pregnancy complications, and Allium sativum achieves this by its antispasmodic and anti-inflammatory properties, which prevent uterine contractions and promote a healthy pregnancy.

The medicinal benefits of Allium sativum on the reproductive system help relieving the health conditions listed below.

Respiratory System

Allium sativum relieve congestion through its antimicrobial properties, which inhibit the growth of pathogens that cause respiratory infections.

The antioxidant and anti-inflammatory properties in Allium sativum prevent inflammation and reduce swelling in the airways, making it easier to breathe. Additionally, Allium sativum reduce coughing due to its expectorant properties, which help clear mucus from the lungs. The soothing and anti-inflammatory properties of Allium sativum also soothe irritation in the respiratory tract, while its antioxidant properties protect airways from oxidative damage.

By preventing infections and relaxing bronchi, Allium sativum ease breathing and promote a healthy respiratory system.

The medicinal benefits of Allium sativum on the respiratory system help relieving the health conditions listed below.

Urinary System

Allium sativum prevents kidney stones through its high sulfur content, which reduces the formation of oxalate crystals in the kidneys.

The antimicrobial properties of Allium sativum reduce urine infections by inhibiting the growth of harmful bacteria such as E. coli. Allium sativum alleviates bladder inflammation by its anti-inflammatory compounds, which reduce inflammation and ease symptoms. The antioxidant properties of Allium sativum treat urinary tract infections by neutralizing free radicals that damage kidney cells and exacerbate infection.

Additionally, the relaxing effect of Allium sativum on urinary muscles reduces urine frequency and also tones kidney function, while its anti-inflammatory properties cure prostatitis symptoms and prevent bladder cancer, and its ability to reduce inflammation also prevents kidney failure.

The medicinal benefits of Allium sativum on the urinary system help relieving the health conditions listed below.

What are the dominant therapeutic properties of Allium sativum?

The therapeutic properties of Allium sativum are multifaceted, with its antimicrobial properties attributed to the presence of bioactive compounds such as flavonoids and saponins, which can inhibit the growth of various pathogens, including bacteria, fungi, and viruses.

The antioxidant properties of Allium sativum, derived from its rich content of polyphenols and volatile oils, help to neutralize free radicals and protect against oxidative stress, thereby mitigating the risk of chronic diseases. Its anti-inflammatory properties, resulting from the action of bioactive compounds like allicin and quercetin, reduce inflammation and alleviate conditions such as arthritis and other inflammatory disorders. Additionally, Allium sativum exhibits antibacterial properties, thanks to its ability to disrupt bacterial cell membranes and interfere with their metabolic processes, as well as anticancer properties, attributed to the induction of apoptosis in cancer cells.

Furthermore, the analgesic, antiplatelet, vasodilatory, and anticough properties of Allium sativum contribute to its traditional use in treating various health conditions, including pain management, cardiovascular disease, and respiratory disorders.

The following illustration give a summary of the dominant therapeutic properties of Allium sativum.

properties of Allium sativum

The list below provides more details on why Allium sativum has the therapeutic properties mentioned in the illustration above.

What are the major healing constituents of Allium sativum?

The healing constituents of Allium sativum are primarily responsible for its medicinal properties, with allicin being the most significant component, possessing antibacterial, antiviral, and antifungal properties due to its sulfur-containing compound diallyl thiosulfinate.

Quercetin and kaempferol, two flavonoids present in garlic, exhibit potent antioxidant and anti-inflammatory activities, thereby protecting against oxidative stress and inflammation. Phenolic acids, particularly ferulic acid and caffeic acid, contribute to the antimicrobial and anti-cancer properties of garlic, while flavonoids such as quercetin and kaempferol also inhibit platelet aggregation and lower cholesterol levels. The combination of these compounds in Allium sativum is responsible for its vasodilatory effects, cardiovascular benefits, and its ability to combat various diseases.

The synergistic effects of these constituents make garlic an effective remedy for various health conditions, backed by numerous scientific studies and traditional uses.

The following illustration give a summary of the major healing consitutents of Allium sativum.

constituents of Allium sativum

The list below provides more details on what are the major healing constituents of Allium sativum and why they are important for health.

The table that follows estimates the relative concentrations of the main medicinal constituents contained in Allium sativum and lists the most relevant medicinal properties of each constituent based on the corresponding concentrations.

ConstituentConcentrationProperties
AllicinHIGHAntimicrobial, Antioxidant, Anti-inflammatory, Analgesic, Antiviral, Anticancer, Vasodilator, Hypocholesterolemic, Antihypertensive
QuercetinLOWAntimicrobial, Antioxidant, Anti-inflammatory, Antihistamine, Antiviral, Analgesic, Anti-cancer, Anti-hyperlipidemic, Anti-diabetic, Anti-hypertensive
KaempferolMEDIUMAntioxidant, Anti-inflammatory, Antimicrobial, Antiproliferative, Antioxidant, Anticancer, Vasodilator, Cardioprotective
Phenolic acidsLOWAntimicrobial, Antioxidant, Anti-inflammatory, Antibacterial, Antiviral, Anticancer, Antihistamine, Antioxidative, Antiproliferative
FlavonoidsMEDIUMAntimicrobial, Antioxidant, Anti-inflammatory, Anticancer, Antihistamine, Antihypertensive, Analgesic, Antiplatelet
SaponinsLOWAntimicrobial, Antioxidant, Anti-inflammatory, Antibacterial, Antifungal, Antiviral, Hepatoprotective
Diallyl disulfideMEDIUMAntimicrobial, Antioxidant, Anti-inflammatory, Anticancer, Antiproliferative, Antihistaminic, Antifungal, Anticancer, Antimutagenic, Anticarcinogenic
IsorhapontigeninLOWAntimicrobial, Antioxidant, Anti-inflammatory, Neuroprotective, Anticancer, Cardioprotective
Organosulfur compoundsHIGHAntimicrobial, Antioxidant, Anti-inflammatory, Antihistamine, Analgesic, Pain relief, Cardiovascular, Anticancer
Sulfenic acidLOWAntimicrobial, Antioxidant, Antihemorrhagic, Cardioprotective, Antiproliferative

What are the most used parts of Allium sativum in medicine?

The most used parts of Allium sativum for medicinal purposes are roots, flowers, and leaves.

The primary bioactive compounds in the roots are sulfur compounds, such as allicin, which exhibits antibacterial, antifungal, and antiviral properties, as well as anti-inflammatory and antioxidant properties. The flowers of Allium sativum contain volatile oils, including diallyl disulfide, which has been shown to possess anti-inflammatory, antioxidant, and analgesic properties, while also exhibiting antimicrobial activity. The leaves contain flavonoids, such as kaempferol and quercetin, which are responsible for their anti-inflammatory, antioxidant, and hepatoprotective properties.

The medicinal properties of these parts contribute to the plant's traditional uses in treating conditions such as colds, coughs, and digestive issues.

The following illustration give a summary of the most used parts of Allium sativum in medicine.

parts of Allium sativum

The list below provides more details on what are the most used parts of Allium sativum in medicine and why.

The table that follows gives a more complete list of healing constituents found in each part of Allium sativum mentioned above.

PartConstituents
RootsAllicin, Diallyl disulfide, Quercetin, Kaempferol, Isorhapontigenin, Saponins, Volatile oils, Allixin, Diallyl trisulfide, Volatile sulfur compounds
FlowersSaponins, Volatile oils, Sesquiterpenes, Flavonoids, Phenolic acids, Allyl disulfide, Ajoene
LeavesAlliin, Saponins, Flavonoids, Alk(en)yl cysteine sulphoxides, Polyphenols, Volatile oils

What are the most common medicinal preparations of Allium sativum?

The most common herbal preparation of Allium sativum for medicinal purposes are capsules, which are used to relieve heartburn and indigestion symptoms by reducing stomach acid production.

Capsules can also be combined with other herbal preparations like tincture, a concentrated liquid extract, to enhance their effectiveness in treating various health issues. A salve, a topical ointment, is another preparation of Allium sativum that is used to treat skin conditions such as acne, wounds, and cuts, by applying the antibacterial and antifungal properties of the plant. In addition to topical treatments, Allium sativum can also be consumed as a tea, which is used to lower cholesterol levels, improve cardiovascular health, and alleviate cold and flu symptoms.

The essential oil and suppository preparations of Allium sativum are used to treat digestive issues, such as constipation, and to reduce inflammation in the body.

The following illustration give a summary of the most common medicinal preparations of Allium sativum.

preparations of Allium sativum

The list below provides more details on what are the most common medicinal preparations of Allium sativum and what are their main uses.

The table that follows shows what are the most used parts of Allium sativum for each medicinal preparation.

PreparationParts
CapsuleRoots, Leaves
TinctureRoots, Leaves
SalveRoots, Leaves
TeaRoots, Leaves
OilRoots, Flowers, Leaves

Capsule

Allium sativum capsule is a preparation commonly used to treat antioxidant, cough, immune system, cold, inflammation, antibacterial, fever, digestion, and cardiovascular issues.

It is widely used, found in many households, and prescribed by practitioners due to its effectiveness. One of the most common effects of taking Allium sativum capsule is the alleviation of respiratory issues and cold symptoms. This preparation is made from the roots and leaves of the Allium sativum plant.

The process of making Allium sativum capsule is moderately difficult, requiring careful extraction and drying of the plant material.

Below you find a 5-step quick procedure to make effective medicinal Allium sativum capsule.

  1. Harvest and dry the roots and leaves of Allium sativum under shade or low heat to preserve their properties.
  2. Grind the dried roots and leaves of Allium sativum into a fine powder using a mill or grinder.
  3. Mix the powdered Allium sativum with a suitable binder and excipient to form a uniform blend.
  4. Fill empty capsules with the uniform blend of powdered Allium sativum and seal them tightly to prevent leakage.
  5. Label and store the herbal capsules in a cool, dry place away from direct sunlight and moisture.

Tincture

Allium sativum tincture is commonly used to treat cold, flu, and respiratory infections due to its antiviral properties, which inhibit the replication of viruses such as influenza.

Its antimicrobial properties also make it effective against bacteria, including antibiotic-resistant strains. People use this preparation to alleviate symptoms like fever, sore throat, cough, and digestive issues.

This preparation is widely used, particularly for its ability to reduce the duration and severity of respiratory infections. The most common effect of taking Allium sativum tincture is relief from respiratory symptoms. This preparation is made from the roots and leaves of Allium sativum, which are rich in compounds like allicin and sulfur-containing amino acids.

Although it requires some skill, the process of making Allium sativum tincture is considered moderately difficult due to the need for precise measurement and proper solvent selection to extract the active compounds.

Below you find an image of Allium sativum tincture.

tincture made with Allium sativum

Below you find a 5-step quick procedure to make effective medicinal Allium sativum tincture.

  1. Harvest fresh roots and leaves of Allium sativum and clean them thoroughly.
  2. Dry the roots and leaves in a cool, dark place to preserve their potency and prevent spoilage.
  3. Grind the dried roots and leaves into a fine powder using a mortar and pestle or a spice grinder.
  4. Combine the powdered roots and leaves with a solvent such as ethanol or glycerin in a clean glass jar.
  5. Steep the mixture for several weeks in a cool, dark place, shaking the jar occasionally to facilitate extraction.

Salve

Allium sativum salve is a herbal preparation commonly used to treat various skin conditions, including wounds, acne, cold sore, migraine, insect bites, fungal infections and eczema.

It's widely used due to its proven effectiveness in alleviating symptoms of these conditions. One of the common effects of this salve is its anti-inflammatory properties, which help to reduce swelling and promote healing. This preparation is typically made from the roots and leaves of the Allium sativum plant, which are rich in active compounds that contribute to its therapeutic properties.

However, making Allium sativum salve can be a challenging process, as it requires precise extraction and processing of the plant's components to ensure the desired potency and stability.

Below you find an image of Allium sativum salve.

salve made with Allium sativum

Below you find a 5-step quick procedure to make effective medicinal Allium sativum salve.

  1. Gather and clean Allium sativum roots and leaves, ensuring they are free of debris and contaminants.
  2. Combine the cleaned roots and leaves in a large pot and cover them with carrier oil, allowing them to steep for several weeks.
  3. After the steeping process, strain the mixture through cheesecloth or a coffee filter to separate the liquid from the solids.
  4. Add a wax or emulsifier to the liquid mixture and heat it gently until the wax has fully dissolved.
  5. Pour the liquid mixture into small containers and allow it to cool and solidify, resulting in the Allium sativum herbal salve.

Tea

Allium sativum tea is a herbal preparation used to treat various health conditions including inflammation, common cold, respiratory infections, high blood pressure, cardiovascular disease, cholesterol, gastritis, diabetes, ulcers and stress.

It's one of the most widely used herbal teas globally. A common effect of consuming this tea is its ability to lower blood pressure and improve cardiovascular health by reducing cholesterol levels. The tea is typically made from the roots and leaves of the Allium sativum plant, which are often combined in varying proportions to create a flavorful and medicinal brew.

Making Allium sativum tea is relatively simple, as it involves boiling the plant material in water for a few minutes to release its active compounds.

Below you find an image of Allium sativum tea.

tea made with Allium sativum

Below you find a 5-step quick procedure to make effective medicinal Allium sativum tea.

  1. Gather fresh or dried roots and leaves of Allium sativum, also known as garlic.
  2. Clean and chop the roots and leaves into smaller pieces to release their medicinal properties.
  3. Combine the chopped roots and leaves in a saucepan with a small amount of boiling water.
  4. Steep the mixture for several minutes to allow the herbal properties to infuse into the water.
  5. Strain the tea into a cup and discard the solids, serving hot or cold as desired.

Oil

Allium sativum oil is a herbal preparation used to treat various conditions including inflammation, hypertension, antibacterial infections, atherosclerosis, gum disease, diabetes, wound healing and cancer.

It's a common preparation due to its widespread use in traditional medicine. The effect of Allium sativum oil is often reported to be anti-inflammatory. This preparation is typically made from the roots, flowers or leaves of the Allium sativum plant.

The process of making Allium sativum oil is moderately difficult, requiring some knowledge of herbal extraction techniques.

Below you find an image of Allium sativum oil.

oil made with Allium sativum

Below you find a 5-step quick procedure to make effective medicinal Allium sativum oil.

  1. Dry and clean the roots of Allium sativum, then chop them into small pieces.
  2. Combine the chopped roots with the leaves and flowers of Allium sativum in a large glass jar.
  3. Add a carrier oil such as olive or grapeseed oil to the jar, covering the plant material completely.
  4. Seal the jar and place it in a cool, dark location, allowing it to infuse for several weeks, shaking the jar occasionally.
  5. Strain the oil through a cheesecloth or a coffee filter into another clean glass container, discarding the plant material.

What are the possible side effects of Allium sativum if used improperly?

The most common side effects Allium sativum gives people when used improperly are listed below, along with a brief explanation.

What are the precautions to take before using Allium sativum medicinally?

The precautions to take before using Allium sativum medicinally are to consult a doctor before use, especially if you have underlying health conditions, and to avoid its use in pregnancy and breastfeeding due to potential risks to the fetus or baby.

Additionally, monitor your blood sugar levels as Allium sativum may lower them further, and be cautious with bleeding disorders as it may increase the risk of bleeding. Use Allium sativum in moderation and avoid its use with anticoagulant medications, as this may exacerbate bleeding, and watch for allergic reactions such as skin irritation or respiratory problems. Interactions with diabetes medications may also occur, requiring adjustments to your treatment plan, and be cautious with liver disease, as Allium sativum may worsen liver function.

Finally, report any side effects to your doctor promptly, so they can be addressed and managed effectively.

The most important precautions you must take before using Allium sativum for medicinal purposes are listed below, along with a brief explanation.

Are there scientific studies that prove the medical effectiveness of Allium sativum?

Yes, there are several scientific studies that prove the medicianl effectiveness of Allium sativum. Here are some studies that are worthy of notice.

According to a study published by "Critical reviews in food science and nutrition", Allium sativum possesses several health-promoting properties, including antimicrobial, antioxidant, antitumor, immunoregulatory, antidiabetic, and anti-inflammatory effects. These properties make Allium sativum a valuable resource for the development of functional foods and medicinal applications. Overall, the bioactive components of Allium sativum contribute to its potential in preventing and treating various chronic diseases, making it a significant area of research in the field of nutrition and medicine.

In another study published by "Klinicheskaia meditsina", the prolonged administration of Allium sativum significantly reduced the multifactor risk of coronary heart disease, acute myocardial infarction, and sudden death in patients with elevated and high risk of heart disease. Specifically, it reduced the 10-year risk of coronary heart disease by 13.2% in men and 7.1% in women, and the 10-year risk of myocardial infarction and sudden death in men by 26.1%. This reduction in risk is attributed to various factors, including a decrease in cholesterol and low-density lipoprotein concentration in men and an increase in high-density lipoprotein level in women.

A different research published by "Research communications in chemical pathology and pharmacology", Allium sativum presents antioxidant activity and has the ability to scavenge hydroxyl radicals, suggesting its potential in neutralizing free radical attacks. Furthermore, it displays good reducing ability, interacting with DPPH stable free radicals, which can help mitigate oxidative stress. These properties indicate that Allium sativum may play a role in preventing or alleviating various pathophysiological conditions.

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