Marrubium vulgare
What's the taxonomical classification of Marrubium vulgare?
Marrubium vulgare belongs to the kingdom Plantae and is classified within the phylum Streptophyta. As a member of the class Equisetopsida and the subclass Magnoliidae, it falls under the order Lamiales. This plant is a representative of the family Lamiaceae, characterized by its specific botanical traits, and is further categorized into the genus Marrubium, with the specific epithet vulgarle defining its unique identity as the species Marrubium vulgare.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Lamiales |
| Family | Lamiaceae |
| Genus | Marrubium |
| Species | vulgare |
What are the morphological characteristics of this plant?
Marrubium vulgare has square stems, opposite lanceolate leaves with crenate margins, and dense terminal clusters of white, two-lipped labiate flowers. The plant is a perennial herb that typically grows to a height of 30 to 60 centimeters. Its foliage is characterized by a thick layer of fine, white hairs on both surfaces, giving the leaves a grayish-green appearance. The inflorescence consists of compact, head-like whorls located at the ends of the branches. These flowers emerge from a calyx that is distinctly hairy and remains persistent after flowering.
What is the geographical distribution of this plant?
This plant is native to the Mediterranean region, spanning across Southern Europe, North Africa, and parts of Western Asia. It thrives in various habitats ranging from coastal cliffs to dry, rocky hillsides. While its primary origin is the Mediterranean basin, it has been introduced to other temperate regions around the world through human activity. The species is commonly found in disturbed soils and open grasslands where sunlight is abundant. It continues to expand its presence in regions with similar climatic conditions as its native home.
How is this plant cultivated?
This plant requires full sun exposure and well-drained, sandy or rocky soil to thrive in a Mediterranean-style garden setting.
It is a hardy perennial that is highly drought-tolerant once its root system has become established in the ground. Growers should avoid overwatering to prevent root rot, as the species prefers relatively dry conditions. Propagation is most effectively achieved through stem cuttings taken during the growing season or by collecting seeds in late summer.
Because it is quite resilient, it can be grown in various climates as long as the drainage remains optimal.
What parts of this plant are used medicinally?
This plant Marrubium vulgare is primarily utilized in traditional medicine through its leaves, flowers, and entire aerial parts. The aromatic leaves are the most common component used to prepare infusions for treating respiratory ailments like coughs. Both the flowers and the stems contribute to the medicinal potency of the aerial parts harvested from the plant. While the leaves are the primary focus, the roots are also occasionally employed in specific herbal preparations. These various components work together to provide expectorant and soothing properties.
According to a study published by "The Plant journal : for cell and molecular biology", the leaves of Marrubium vulgare contain major bioactive compounds such as marrubiin and other labdane-related furanoiid diterpenoids. These compounds have potential applications as anti-diabetics, analgesics, or vasorelaxants. Metabolite and transcriptome profiling of the leaves identified 5 different candidate diterpene synthases belonging to the TPS-c and TPS-e/f clades. The specialized metabolism involves 3 diTPSs, specifically MvCPS3 (+)-copalyl diphosphate synthase and the functional diTPS pair MvCPS1 and MvELS. The MvELS enzyme is active in vitro and in vivo with 3 different prenyl diphosphate substrates to form the marrubiin precursor 9,13-epoxy-labd-14-ene.
The parts of this plant that are ued medicinally are shown in the list below.
- leaves
- flowers
- aerial part
- stem
- roots
What traditional systems uses this plant?
This plant, known as white horehound, has been utilized for centuries in various traditional medical systems to treat respiratory ailments, digestive issues, and skin inflammations. In Algerian empirical medicine, practitioners often prepare infusions or decoctions from its leaves to soothe coughs and alleviate bronchial congestion. Historical European folk medicine similarly employed the herb as an expectorant to help clear phlegm from the lungs. Beyond its respiratory applications, different cultures have used the plant's bitter properties to stimulate appetite and aid digestion. These diverse uses reflect a long history of relying on the plant's bioactive compounds for holistic health management.
According to a study published by "Molecules (Basel, Switzerland)", Marrubium vulgare is used in Algerian empirical medicine with claims of effective therapy against diabetes. In this research, extracts of the plant were prepared using ethanol ratios of 0, 50, 80, and 100%. An extract of Marrubium vulgare prepared with 80% ethanol exhibited the highest total phenolic content (TPC) of 612.84 μg GAE/mg extract.
The hystorical systems that uses this plant are shown in the list below.
- Algerian empirical medicine
What are the pharmacological activities of Marrubium vulgare?
This plant has demonstrated diverse pharmacological activities including anti-inflammatory, antispasmodic, antioxidant, antimicrobial, and hypoglycemic properties. Its antioxidant potential helps neutralize free radicals, which protects cells from oxidative damage. The plant also exhibits antimicrobial effects by inhibiting the growth of various pathogenic microorganisms. Additionally, its antispasmodic action assists in relaxing smooth muscles, while its anti-inflammatory capacity reduces swelling and pain. Research also suggests its hypoglycemic activity may assist in regulating blood glucose levels.
According to a study published by "PloS one", the plant Marrubium vulgare contains different types of secondary metabolites including polyphenols, flavonoids, condensed tannins, crude saponins, carotenoids and alkaloids. These secondary metabolites are involved in important biological activities. Among the group of analysed plants, Marrubium vulgare was found to possess the highest anti-inflammatory activity. The study also confirmed that this plant contains a remarkable amount of different bio-active compounds.
The primary pharmacological activities of this plant are shown in the list below.
- analgesic
- anti-inflammatory
- antimicrobial
- antispasmodic
- antioxidant
What medicinal compounds this plant contains?
This plant contains the diterpene marrubiin, the sesquiterpene alcohol marrubenol, the derivative marrubiinic acid, the glycoside marruboside, and the phenylethanoid glycoside forsythoside B. These chemical constituents provide the herb with various biological activities, including antitussive and anti-inflammatory properties. Marrubiin serves as a primary active component often studied for its impact on respiratory health. The presence of marruboside and forsythoside B further contributes to the complex pharmacological profile of the species. Together, these diverse compounds justify the traditional use of the plant in various medicinal practices.
According to a study published by "The Plant journal : for cell and molecular biology", Marrubium vulgare contains major bioactive compounds such as marrubiin and other labdane-related furanoiid diterpenoids with potential applications as anti-diabetics, analgesics or vasorelaxants. Metabolite and transcriptome profiling of the leaves identified 5 different candidate diterpene synthases of the TPS-c and TPS-e/f clades. Within the specialized metabolism, the study identifies 3 diTPSs consisting of MvCPS3 (+)-copalyl diphosphate synthase and the functional diTPS pair MvCPS1 and MvELS. The MvCPS1 and MvELS pair produces a unique oxygenated diterpene scaffold known as 9,13-epoxy-labd-14-ene en route to marrubiin. MvELS is active in vitro and in vivo with 3 different prenyl diphosphate substrates to form the marrubiin precursor 9,13-epoxy-labd-14-ene, manoyl oxide and miltiradiene.
The primary medicinal compounds of this plant are shown in the list below.
- Marruboside
- Marrubenol
- Marrubiin
- Marrubiinic acid
- Premarrubiin
What health conditions is this plant used for?
This plant is used for managing gastrointestinal disorders, reducing inflammation, and treating hyperglycemia associated with diabetes mellitus and type II diabetes. Its bioactive compounds help regulate blood sugar levels by preventing excessive glucose spikes in the bloodstream. The herbal properties also provide relief for digestive issues and soothe internal swelling. By addressing these metabolic and inflammatory concerns, it serves as a traditional remedy for various chronic ailments.
According to a study published by "Phytomedicine : international journal of phytotherapy and phytopharmacology", Marrubium vulgare is used in Brazil and many countries in folk medicine against several diseases, including gastrointestinal disorders. This plant is used as an antispasmodic because its hydroalcoholic extract of the roots and aerial parts exerts a significant antispasmodic activity. The extract inhibits the action of neurotransmitters such as acetylcholine, bradykinin, prostaglandin E(2), histamine and oxytocin. These findings support the popular use of the plant in folk medicine.
The main health conditions this plant is used for are shown in the list below.
- diabetes mellitus
- gastrogastrointestinal disorders
- inflammation
- hyperglycemia
- type II diabetes
What are the herbal preparations of this plant?
This plant is used to create various medicinal preparations including an 80% ethanol extract, decoction, essential oils, infusion, and macerates. The 80% ethanol extract and macerates are commonly employed to concentrate specific bioactive compounds like marrubiin. For acute respiratory relief, a warm infusion or a decoction of the dried leaves is often prepared to soothe the throat. The essential oils extracted from the plant offer a highly concentrated aromatic form for topical or specialized uses. Each of these different methods serves to isolate particular chemical constituents for specific therapeutic applications.
According to a study published by "Archives of medical research", the hypoglycemic effect of Marrubium vulgare was investigated using 27 healthy rabbits. The experiment involved the gastric administration of a decoction of the plant before the induction of temporary hyperglycemia via a subcutaneous injection of 4 ml/kg of weight of a 50% dextrose solution. Blood glucose levels were determined every 60 min for a period of 5 h. Marrubium vulgare was one of the plants that decreased hyperglycemia significantly compared to the water control (p < 0.05). Among the studied plants, it yielded the second strongest effect after Guaiacum coulteri.
The main herbal preparations of this plant are shown in the list below.
- 80% ethanol extract
- decoction
- essential oils
- infusion
- macerates
What side effects this plant can have?
This plant can cause severe health complications including acute kidney injury, hypoglycemia, hypotension, interstitial nephritis, and nephrotoxicity. Consumption of the herb may lead to dangerous drops in blood glucose levels and a significant reduction in blood pressure. Its chemical constituents are known to damage renal tissues, potentially resulting in life-threatening nephrotoxicity. This damage can progress into interstitial nephritis, which further impairs the kidneys' ability to filter waste. Such systemic issues highlight the significant risks associated with the improper use of this botanical species.
According to a study published by "Case reports in nephrology", the chronic intake of Marrubium vulgare was part of a mixture that led to severe acute renal failure in a 17-year-old patient. This consumption was associated with esophagitis, erosive gastritis, and an inflammatory anemia. A histological examination of a renal biopsy sample revealed interstitial nephritis without antibody deposits. This represents the first reported case of acute kidney injury related to the consumption of this plant as part of the mixture.
The main side effects this plant can have are shown in the list below.
- acute kidney injury
- hypoglycemia
- hypotension
- interstitial nephritis
- nephrotoxicity
What herbs are paired with Marrubium vulgare?
This plant Marrubium vulgare pairs most effectively with aromatic herbs like thyme, rosemary, and sage to enhance its bitter profile.
When used in medicinal infusions, it often complements peppermint or lemon balm to balance its strong, pungent flavor with refreshing notes. Culinary applications may benefit from blending it with woody herbs like lavender to create complex botanical profiles. These combinations help mitigate the plant's natural intensity while highlighting its earthy undertones.
Using these pairings ensures a more harmonious sensory experience in both tea and seasoning blends.