Inula helenium
What's the taxonomical classification of Inula helenium?
Inula heleniuim belongs to the kingdom Plantae and is classified within the phylum Streptophyta. As a member of the class Equisetopsida and the subclass Magnoliidae, this plant follows the evolutionary lineage of the order Asterales. It is further nested within the family Asteraceae, a large group of flowering plants, and is specifically identified under the genus Inula and the species heleniuim.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Inula |
| Species | helenium |
What are the morphological characteristics of this plant?
Inula helenium has upright, herbaceous stems that reach heights of up to one meter and bear large, bright yellow composite flower heads measuring 5 to 10 centimeters in diameter. The leaves are primarily basal and lanceolate in shape, featuring a rough, hairy texture and serrated margins. Higher up the stem, the leaves become smaller and more elliptical as they transition toward the flowering portion of the plant. The inflorescence consists of numerous ray florets surrounding a central cluster of disc florets, typical of the Asteraceae family. These golden blooms are supported by sturdy, branched stalks that emerge from the central stem during the peak growing season.
What is the geographical distribution of this plant?
This plant is endemic to the Hawaiian Islands, specifically found within the diverse ecosystems of the island of Hawaii. It grows primarily in high-elevation montane shrublands and subalpine zones where moisture is more abundant. Its range is quite restricted, making it a rare species that exists in very specific ecological niches. Localized populations are often concentrated in protected areas like volcanic landscapes or rainforest margins. Because of this limited distribution, the plant is highly susceptible to habitat loss and invasive species.
How is this plant cultivated?
This plant, Inula helenium, requires full sun to partial shade and well-drained, moist, nutrient-rich soil to thrive in garden settings.
It is a hardy perennial that spreads via rhizomes, so providing ample space is necessary to prevent it from overcrowding other species. Regular watering is essential during the establishment phase to ensure the deep root systems develop properly. Once mature, the plant is relatively low-maintenance and can tolerate various soil types as long as they do not remain waterlogged.
Pruning the spent flower heads in late summer can help encourage a tidier appearance for the following season.
What parts of this plant are used medicinally?
This plant Inula helenium provides medicinal value through its rhizome, radix, herb, flos, and aerial parts. The rhizome and radix are the underground structures often harvested for their concentrated chemical properties. Practitioners also utilize the flos, which are the flowers, to extract specific therapeutic compounds. The herb refers to the entire non-woody portion of the plant used in various preparations. Finally, the aerial parts encompass all growing structures above the soil surface that contribute to the plant's healing potential.
According to a study published by "Biological trace element research", Inu la heleniu m was analyzed as part of a study involving 42 medicinal plant samples. The study specifically noted that the Cd content was lowest in Inu la heleniu m at 0.85 mg kg-1. This research focused on assessing trace and macro elements in medicinal plants to understand safety and phytoremediation implications. The data provided for this plant is limited to its specific measurement for Cd.
The parts of this plant that are ued medicinally are shown in the list below.
- aerial parts
- flos
- herb
- radix
- rhizome
What traditional systems uses this plant?
This plant, Inula helenium, has been utilized extensively in traditional Russian herbal medicine to treat various respiratory ailments such as bronchitis and coughs. Historically, practitioners in Eastern Europe prepared infusions and decoctions from its roots to act as a powerful expectorant. The plant's bitter compounds were also valued for stimulating digestion and treating intestinal parasites. Beyond its medicinal applications, different cultures across Eurasia have integrated the plant into folk remedies for soothing sore throats. These long-standing traditions highlight the historical reliance on its chemical properties for managing pulmonary health.
According to a study published by "Biomeditsinskaia khimiia", plant peptides obtained from traditional Russian herbal medicine have gradually gained considerable attention as a new source of anticancer drugs. The study tested the antitumor activity of a peptide extract known as PE-PM, which is obtained from a mixture containing Inu la heleniuim L. This research utilized a new mouse ASF-LL model of adult T-lymphoma/leukemia to evaluate the extract. Through two local injections of the PE-PM peptide extract, distinct antitumor activity was detected. This activity resulted in tumor growth inhibition and survival improvement of 33% of recipients bearing the intraperitoneal form of ASF-LL.
The hystorical systems that uses this plant are shown in the list below.
- Russian herbal medicine
What are the pharmacological activities of Inula helenium?
This plant has potent analgesic, anti-inflammatory, antibacterial, antimicrobial, and antioxidant pharmacological activities. These diverse therapeutic properties are attributed to the unique chemical constituents found within its various extracts. The antioxidant capacity helps mitigate oxidative stress by neutralizing harmful free radicals in the body. Furthermore, its antibacterial and antimicrobial actions allow it to effectively inhibit the growth of various pathogenic microorganisms. The presence of anti-inflammatory and analgesic compounds also makes it a valuable subject for managing pain and swelling.
According to a study published by "Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica", the Muskone including Radix Inulae can decrease the area of myocardial infarction in rats. This specific Muskone also significantly decreases the level of TXB2 and ET, as well as the frequency of writhing. Additionally, it can increase the level of 6-keto-PGF1alpha and the ratio of 6-keto-PGF1alpha and TXB2. While the Muskone including Radix Inulae has significant therapeutic effects on both myocardial infarction and pain, single Radix Inulae only can relieve pain.
The primary pharmacological activities of this plant are shown in the list below.
- analgesic
- anti-inflammatory
- antioxidant
- anti-MTB activity
- antibacterial
What medicinal compounds this plant contains?
This plant contains the sesquiterpene lactones alantolactone, helenin, isoalantolactone, and telekine. These specific medicinal compounds are primary constituents found within the chemical profile of Inula helenium. The presence of these lactones is responsible for much of the plant's biological activity. Researchers study these substances for their potential anti-inflammatory and antimicrobial properties. These chemical elements define the complex therapeutic potential of the species.
According to a study published by "Archiv der Pharmazie", the plant Inula heleniuem contains the sesquiterpene lactone known as alantolactone. This specific compound has emerged as a promising anticancer candidate due to its diverse pharmacological actions. Alantolactone is capable of modulating multiple molecular targets and signaling cascades, including NF-κB, STAT3, MAPK, and apoptotic regulators. The compound demonstrates strong cytotoxic activity across diverse cancer cell lines and tumor-bearing animal models. Despite these findings, its development faces barriers such as low systemic bioavailability and a lack of human clinical data.
The primary medicinal compounds of this plant are shown in the list below.
- Alanitolactone
- helenin
- isoalanitolactone
- sesquiterpene lactones
- telekine
What health conditions is this plant used for?
This plant is used for treating acne, bronchitis, cough, fever, and various inflammation-based diseases in the respiratory tract. Its medicinal properties help to soothe irritated airways and reduce the severity of respiratory symptoms. When applied or ingested correctly, it can assist in managing skin eruptions such as acne. The plant also serves as an effective remedy for lowering body temperature during a fever. Furthermore, it plays a crucial role in calming inflammation throughout the respiratory system.
According to a study published by "Evidence-based complementary and alternative medicine : eCAM", Inuula helenium is used for its antimicrobial, antisebum, and anti-inflammatory activities. This plant inhibited sebum production at 90 μg/ml and showed no significant cytotoxic effects on HaCaT cells up to 250 μg/ml. It significantly inhibited LPS-induced IL-6 and TNF-α production in THP-1 cells, reaching control levels of untreated cells at a concentration of 250 μg/ml. Additionally, the plant extract inhibited nitric oxide production in a dose-dependent manner. When used in an antiacne herbal cream, it contributed to the disappearance of 54.95% of acne inflammatory and noninflammatory lesions after 2 weeks, 85.3% after 5 weeks, and 91.4% by the end of the 6th week of application.
The main health conditions this plant is used for are shown in the list below.
- acne
- bronchitis
- cough
- fever
- inflammation-based diseases in respiratory tract
What are the herbal preparations of this plant?
This plant is Inula helenium, which is utilized to create diverse medicinal preparations including aqueous extracts, chloroform fractions, ethanolic tinctures, oral liquid preparations, and acne-fighting herbal creams. Researchers utilize aqueous extraction to isolate water-soluble components for various therapeutic applications. Chloroform fractions are specifically processed to isolate non-polar bioactive compounds from the plant material. For internal administration, an ethanolic tincture or a standardized oral liquid preparation can be formulated to ensure consistent dosing. Topical applications also include an acne herbal cream designed to utilize the plant's inherent antimicrobial properties.
According to a study published by "African journal of traditional, complementary, and alternative medicines : AJTCAM", the aqueous extract of Inu la heleniu m (radix)-INU was analyzed for its redox parameters. The Trolox equivalent antioxidant capacity (TEAC) of the INU extract was found to be lower than SYM but higher than CAL, ANG(F), ANG(R), and ECB. Among the extracts tested, INU was one of the 3 vegetal extracts that decreased the luminol-enhanced chemiluminescence of PMNL. After the integration of all relative percentages, INU was classified as having a global "Yin" trait.
The main herbal preparations of this plant are shown in the list below.
- aqueous extract
- chloroform fractions
- ethanolic tincture
- oral liquid preparation
- antiacne herbal cream
What side effects this plant can have?
This plant can cause adverse health effects such as bloating, decreased appetite, drowsiness, heaviness in the epigastrium, and pruritus. Digestive discomfort often manifests as a feeling of fullness or heaviness in the upper abdomen. Some individuals may experience a noticeable reduction in their desire to eat after consumption. Central nervous system impacts can lead to unexpected feelings of lethargy or drowsiness. Furthermore, skin reactions like pruritus or intense itching may occur as a systemic response to the plant.
According to a study published by "Terapevticheskii arkhiv", the use of an immunoactive herbal preparation containing Inula helenium led to medicinal damage to the liver in a 39-year-old patient. Symptoms appeared 10 days after the patient started taking the immunostimulant. Laboratory parameters showed alanine transferase increased to 2800 U/l compared to a norm up to 32 U/L, and aspartate transferase rose to 1776 U/l with a norm up to 31 U/l. Furthermore, total bilirubin reached 577 U/l against a norm of 21 U/l, while direct bilirubin was 116 U/l compared to a norm of 4.3 U/l. Alkaline phosphatase also increased to 112 U/l from a norm of up to 98 U/l.
The main side effects this plant can have are shown in the list below.
- bloating
- decreased appetite
- drowsiness
- heaviness in the epigastrium
- pruritus
What herbs are paired with Inula helenium?
This plant Inula helenium pairs most effectively with peppermint, elderberry, and ginger to enhance its expectorant properties.
Combining helenium with peppermint can help soothe the respiratory tract while providing a cooling sensation during cough relief. Adding ginger introduces a warming element that promotes circulation and complements the plant's bitter profile. Elderberry serves as a powerful antioxidant partner that strengthens the immune response alongside the helenium.
These specific combinations are frequently used in herbal syrups and teas to target congestion and seasonal ailments.