Salvia officinalis
What's the taxonomical classification of Salvia officinalis?
Salvia officinalis belongs to the kingdom Plantae and is classified under the phylum Streptophyta. Within the class Equisetopsida and the subclass Magnoliidae, it is further organized into the order Lamiales. It is a member of the family Lamiaceae, which falls under the genus Salvia, and is specifically identified by its species name, officinalis.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Lamiales |
| Family | Lamiaceae |
| Genus | Salvia |
| Species | officinalis |
What are the morphological characteristics of this plant?
Salvia officinalis has a woody, perennial base with quadrangular stems that reach heights of 30 to 60 centimeters and bear grayish-green, rugose leaves with a velvety texture. The foliage is characterized by oblong or lanceolate shapes and crenate margins, often displaying a dense covering of fine hairs on both surfaces. During the flowering season, the plant produces verticillasters arranged in terminal racemes. These inflorescences feature bilabiate flowers that typically range in color from pale blue to violet or lavender. The floral structure is specifically adapted for pollination, featuring a prominent upper lip and a lower lip that serves as a landing platform.
What is the geographical distribution of this plant?
This plant is native to the Mediterranean region, specifically spanning across southern Europe, North Africa, and parts of western Asia. It thrives in various microclimates ranging from rocky hillsides to coastal scrublands within these territories. Due to its long history of medicinal use, it has been naturalized in many other temperate areas around the world. Cultivation is widespread in gardens throughout Europe and North America where the soil provides sufficient drainage. Its distribution is largely influenced by its preference for sunny, warm environments and well-drained terrain.
How is this plant cultivated?
This plant grows best in well-drained, sandy or loamy soil within full sun exposure and a temperate climate.
It requires minimal watering once established, as it is highly drought-tolerant and prone to root rot in soggy conditions. For optimal development, gardeners should provide plenty of air circulation to prevent fungal diseases on its aromatic foliage. Pruning the stems in early spring helps stimulate vigorous new growth and prevents the shrub from becoming overly woody.
Maintaining a slightly alkaline to neutral soil pH will further ensure the plant thrives throughout the growing season.
What parts of this plant are used medicinally?
This plant, Salvia officinalis, provides medicinal value through its leaves, flowers, roots, seeds, and stems. The aromatic leaves are the most commonly utilized part, often prepared as a tea to treat digestive issues and sore throats. Extracts from the flowers and stems are sometimes incorporated into topical applications for their soothing properties. While less common in traditional practice, the roots and seeds can also be processed for specific therapeutic uses. Each part contains various essential oils and compounds that contribute to the overall healing potential of the herb.
According to a study published by "Veterinary world", the leaves of Salvia officinalis are used to create aqueous and ethanolic extracts for medicinal purposes. These extracts were administered to 49 Wistar albino male rats at doses of 400 and 800 mg/kg body weight. At the 800 mg/kg dose, the extracts effectively reduced triglycerides, total cholesterol, LDL-C, and VLDL-C while increasing high-density lipoproteins more than the 400 mg/kg doses or the 50 mg/kg/day metformin treatment. The study showed that these leaf extracts provide potent antidiaabetic, hypolipidemic, and antioxidative properties.
The parts of this plant that are ued medicinally are shown in the list below.
- leaves
- flower
- root
- seed
- stem
What traditional systems uses this plant?
This plant, known as common sage, has been used extensively within traditional European medicines for centuries to treat various ailments. Historical practitioners utilized its potent leaves to remedy digestive issues and soothe sore throats through infusions and gargles. It was also frequently employed in folk traditions to improve cognitive function and memory retention. Beyond internal use, the plant was often applied topically to manage skin inflammations and promote wound healing. These long-standing practices established its reputation as a versatile medicinal staple throughout much of the continent.
According to a study published by "Phytomedicine : international journal of phytotherapy and phytopharmacology", Salvia officinalis L. is categorized as one of the traditional European medicines. This specific plant was part of a combined SRM extract used in a randomized double-blind placebo-controlled pilot trial. The study included 44 normal healthy subjects with a mean age of 61 ± 9.26y SD and a male to female ratio of 6/38. Within the subgroup of 26 subjects aged ≤ 62 years, which consisted of 10 SRM and 16 placebo participants, significant improvements to delayed word recall were observed with p < 0.0123 and a Cohen's effect size d = 0.92. The oral preparation was administered as a single 2-week term ethanol extract.
The hystorical systems that uses this plant are shown in the list below.
- traditional European medicines
What are the pharmacological activities of Salvia officinalis?
This plant has anti-inflammatory, antioxidant, antibacterial, antimicrobial, and antidepressant pharmacological activities. Its rich concentration of phenolic compounds and diterpenoids allows it to neutralize free radicals and reduce oxidative stress in the body. These chemical constituents also inhibit the growth of various pathogenic bacteria and microbes, making it effective for fighting infections. Furthermore, the plant demonstrates potential in modulating neurotransmitters to provide antidepressant effects. Research continues to explore how these diverse biological properties can be utilized in therapeutic applications.
According to a study published by "Global advances in integrative medicine and health", Salvia officinalis extracts have been investigated for their broad medicinal benefits in treating polycystic ovarian syndrome. The extracts were able to significantly minimize markers of the disorder by decreasing the number of cysts in the ovaries. Treatment resulted in a decrease in serum Testosterone and Estradiol levels of 50 and 55% respectively with P < 0.05. Furthermore, the extracts decreased MDA levels by approximately 90% with P < 0.05. They also helped normalize oxidative stress markers including CAT, SOD, and GSH while decreasing IL-1β levels by approximately 40% with P < 0.05.
The primary pharmacological activities of this plant are shown in the list below.
- anti-inflammatory
- anti-oxidant
- antibacterial
- antimicrobial
- cognitive function enhancement
What medicinal compounds this plant contains?
This plant contains rosmarinic acid, carnosiic acid, salvianolic acid isomers, thucone, and carnosoal as its primary medicinal compounds. Rosmarinic acid and salvianolic acid isomers are prominent polyphenols known for their significant antioxidant and anti-inflammatory properties. The diterpenes carnosiic acid and carnosoal contribute to the plant's ability to protect cells against oxidative stress. Additionally, the monoterpene thucone is present, though it must be managed carefully due to its potential neurotoxicity in high concentrations. Together, these diverse chemical constituents form the complex therapeutic profile of Salvia officinalis.
According to a study published by "Molecules (Basel, Switzerland)", Salvia officiinalis contains various medicinal compounds that demonstrate in vitro AChE inhibitory properties in a dose dependent manner. When tested at 1 mg/mL, the ethanolic extracts of Salvia officiinalis showed strong inhibitory activity against AChE. Rosmanic acid was found to be the predominant constituent in this plant as determined by RP-HPLC. This specific hydroxycinnamic acid has a substantial influence on the AChE inhibitory and antioxidant properties of the plant. These findings indicate that Salvia officiinalis is a rich source of various natural AChE inhibitors and antioxidants.
The primary medicinal compounds of this plant are shown in the list below.
- Rosmarinic acid
- Carnosiic acid
- Carnosol
- Thujone
- Salvianolic acid isomers
What health conditions is this plant used for?
This plant is used for managing Alzheimer's disease, enhancing cognitive function, treating diabetes mellitus, and reducing inflammation and oxidative stress. Research suggests that its active compounds can improve memory and mental clarity by protecting neurons in the brain. Regarding metabolic health, it may help regulate blood sugar levels in individuals suffering from diabetes mellitus. The plant also contains potent antioxidants that mitigate oxidative stress within the body's cells. Additionally, its natural properties work to suppress systemic inflammation, providing broad therapeutic benefits.
According to a study published by "CNS & neurological disorders drug targets", Salvia has shown anti-Alzheimer's properties in various in vivo and in vitro studies. The diverse phytochemicals in the plant play a protective role against amyloid-beta-induced neurotoxicity and improve cognitive and learning impairments. These bioactive compounds help to lower the amyloid burden, improve memory dysfunction, and inhibit acetylcholinesterase activity. Furthermore, the plant can reduce apoptosis by the inactivation of Caspase 3 and 9. These medicinal plants help to reduce AD pathogenesis by controlling different pathways and could be used as a therapeutic agent against the symptoms.
The main health conditions this plant is used for are shown in the list below.
- Alzheimer's disease
- Cognitive function
- Memory loss
- Antidiabetic activities
- Antimicrobial activities
What are the herbal preparations of this plant?
This plant is used to create various medicinal preparations including a 66% ethanolic tincture, essential oil, sage tea, an infusion, and a mouthwash. The 66% ethanolic tincture and the concentrated essential oil are often utilized for their potent antimicrobial properties in targeted treatments. For milder therapeutic effects, patients frequently consume sage tea or a simple infusion to soothe digestive or respiratory issues. The plant's extracts are also commonly formulated into a mouthwash to combat oral infections and inflammation. These diverse forms allow for both internal consumption and topical application depending on the specific health requirement.
According to a study published by "Plants (Basel, Switzerland)", a two-year field experiment was conducted in 2019 and 2020 to evaluate the essential oil quantity and quality of Salvia officinalis L. under irrigation treatments of 25, 50, and 75% maximum allowable depletion. Moderate and severe drought stress decreased the dry matter yield of Salvia officinalis L. by 30 and 65%, respectively. The application of TiO2 nanoparticles at 100 mg L-1 plus AMF increased dry matter yield and water use efficiency by 35% each compared to the unfertilized treatment. The highest essential oil content of 1.483%, yield of 2.52 g m-2, and cis-thujone level of 35.84% were obtained in MAD50 fertilized with TiO2 + AMF. The net income index increased by 44, 47, and 76% with the application of TiO2 nanoparticles, AMF, and the co-addition of TiO2 + AMF, respectively.
The main herbal preparations of this plant are shown in the list below.
- 66% ethanolic tincture
- Essential oil
- Sage tea
- Infusion
- Mouthwash
What side effects this plant can have?
This plant can cause severe health complications including clonic seizures, collapse, dizziness, hepatotoxicity, and nephrotoxicity. Consumption of certain compounds in the plant may lead to neurological issues such as dizziness or sudden loss of consciousness. High doses or prolonged use are particularly concerning due to the risk of organ damage, specifically hepatotoxicity affecting the liver and nephrotoxicity impacting the kidneys. In sensitive individuals, these reactions can escalate into serious neurological events like clonic seizures. Such systemic side effects necessitate caution when considering the medicinal use of this species.
According to a study published by "Regulatory toxicology and pharmacology : RTP", the substance thujone found in Salvia officinalis can lead to clonic seizures in male rats. Using dose-response modelling, the BMDL10 was calculated to be 11 mg/kg bw/day for a benchmark response of 10%. Based on this, the study proposes an ADI of 0.11 mg/kg bw/day. It is estimated that between 2 and 20 cups of sage tea would be required to reach this ADI. The study concludes that the short-term medicinal use of this herb can be regarded as safe and current limits are sufficiently protective.
The main side effects this plant can have are shown in the list below.
- clonic seizures
- collapse
- dizziness
- hepatotoxicity
- nephrotoxicity
What herbs are paired with Salvia officinalis?
This plant pairs best with woody or earthy herbs such as rosemary, thyme, sage, and oregano to create robust savory profiles.
When used in culinary applications, the strong camphor notes of sage complement the citrusy brightness of lemon thyme. It also works exceptionally well alongside savory ingredients like bay leaves and marjoram in slow-cooked stews. For lighter infusions, combining it with mint can provide a refreshing aromatic contrast.
These combinations enhance the depth of various meat and vegetable dishes.