Hermetica Superfood Encyclopedia
The Short Answer
Tiger Grass (Centella asiatica) contains triterpenoid compounds—asiaticoside, madecassoside, asiatic acid, and madecassic acid—that stimulate collagen synthesis via TGF-β-independent Smad 2/3 pathway activation, promote fibroblast proliferation, and reduce inflammation by inhibiting iNOS and COX-2 enzymes. A 2020 review in the Journal of Cosmetic Dermatology (PMID 32100931) confirmed Centella asiatica as one of the most evidence-backed bioactive ingredients in cosmeceutical formulations, supporting its clinical use for skin barrier repair, wound healing, and anti-aging applications.
CategoryLeaf & Herb
GroupHerb
Evidence LevelStrong
Primary Keywordwhat is tiger grass
Synergy Pairings4
Tiger Grass — botanical close-up
Health Benefits
Promotes skin regeneration and wound healing by stimulating collagen synthesis
Enhances cognitive function, including memory and mental clarity
Supports cardiovascular health by improving circulation and vascular integrity
Modulates metabolic balance and efficiency
Enhances the body's resilience to stress as an adaptogen
Contributes to cellular longevity through antioxidant and protective mechanisms
Origin & History
Natural habitat
Centella asiatica (Tiger Grass), also known as Gotu Kola, is a perennial herb native to the wetlands of Southeast Asia, including China, India, and Indonesia. Revered in traditional Ayurvedic and Chinese medicine, it is celebrated for its skin regenerative, cognitive enhancing, and adaptogenic properties, making it a powerful functional ingredient.
“Tiger Grass has been traditionally revered in Ayurveda and Traditional Chinese Medicine for wound healing, mental clarity, circulation, blood detoxification, and longevity. It was used in herbal teas, topical pastes, and meditative tonics.”Traditional Medicine
Scientific Research
Nguyen JK et al. (2020) reviewed bioactive cosmeceutical ingredients in the Journal of Cosmetic Dermatology, identifying Centella asiatica triterpenoids as clinically validated agents for skin regeneration, barrier repair, and anti-inflammatory activity (PMID 32100931). Shrestha S et al. (2016) published phytochemical analysis of Thysanolaena latifolia florets in the Journal of Asian Natural Products Research, characterizing constituents of a plant sometimes colloquially called tiger grass, distinguishing it from Centella asiatica (PMID 26230153). Broader phytochemical literature consistently demonstrates that standardized Centella extracts (titrated to 40% asiaticoside, 30% asiatic acid, 30% madecassic acid) show dose-dependent collagen induction in human dermal fibroblast cultures and accelerated re-epithelialization in controlled wound-healing trials.
Preparation & Dosage
Traditional preparation
General
Brew 1–2 grams of dried leaves in 250 ml hot water for 10–15 minutes as a tea.
General
500–1000 mg powdered extract daily, ideally under professional guidance.
Nutritional Profile
- Magnesium, potassium, and calcium: Essential minerals supporting nerve, muscle, and bone health.
- Triterpenoids (asiaticoside, madecassoside): Key bioactive compounds for skin regeneration and cognitive support.
- Flavonoids and polyphenols: Provide potent antioxidant and anti-inflammatory effects.
- Saponins and alkaloids: Contribute to its adaptogenic and therapeutic properties.
- Amino acids: Support protein synthesis and overall cellular function.
How It Works
Mechanism of Action
Asiaticoside activates the TGF-β-independent Smad signaling cascade by directly phosphorylating Smad 2/3 and promoting Smad 3/4 complex formation, which translocates to the nucleus and upregulates type I and type III collagen gene transcription in dermal fibroblasts. Madecassoside functions as a potent antioxidant that scavenges reactive oxygen species in melanocytes and keratinocytes, protecting against UV-induced oxidative damage and hyperpigmentation. Asiatic acid and madecassic acid exert anti-inflammatory effects by inhibiting inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) expression, thereby suppressing prostaglandin E2 and nitric oxide production in activated macrophages. Additionally, these triterpenoids enhance vascular endothelial growth factor (VEGF) expression and angiogenesis, supporting improved microcirculation at wound sites.
Clinical Evidence
Clinical studies demonstrate that triterpenoid extracts (TECA) increase total protein, collagen, and peptic hydroxyproline in wound healing models while enhancing fibroblast proliferation and migration. Combination studies with vitamin C showed superior type I collagen production compared to vitamin C alone, particularly in age-related collagen decline. Research has documented improvements in wound tensile strength and reduced hypertrophic scar inflammation, with applications in vitiligo repigmentation. However, large-scale randomized controlled trials with specific healing rate endpoints are limited, with most evidence derived from preclinical and cell culture studies.
Safety & Interactions
Centella asiatica is generally regarded as safe when used topically or orally at recommended doses (30–60 mg titrated extract, three times daily), though rare cases of contact dermatitis and hepatotoxicity have been reported with prolonged high-dose oral supplementation. Centella triterpenoids may be metabolized by CYP2C9 and CYP2C19 enzymes, potentially interacting with substrates of these pathways such as warfarin, phenytoin, and certain NSAIDs; patients on anticoagulant or hepatotoxic medications should consult a healthcare provider before use. Pregnant and breastfeeding women should avoid oral Centella supplements due to insufficient safety data, and individuals with pre-existing liver conditions should exercise caution. Topical application is well-tolerated across skin types, though patch testing is recommended for sensitive or allergy-prone skin.
Synergy Stack
Hermetica Formulation Heuristic
Adaptogenic base
Cardio & Circulation | Cognition & Focus
Also Known As
Centella asiaticaGotu KolaCicaIndian PennywortBrahmiMandookparni
Frequently Asked Questions
What is tiger grass and how does it benefit skin?
Tiger grass is the common name for Centella asiatica, a medicinal herb containing triterpenoids (asiaticoside, madecassoside, asiatic acid, madecassic acid) that stimulate collagen synthesis, accelerate wound healing, and reduce inflammation. A 2020 review in the Journal of Cosmetic Dermatology (PMID 32100931) confirmed it as one of the most research-backed bioactive cosmeceutical ingredients for skin barrier repair and anti-aging.
Is tiger grass the same as Centella asiatica or cica?
Yes, tiger grass, Centella asiatica, cica, and gotu kola all refer to the same plant species. The nickname 'tiger grass' originates from the observation that wounded tigers in Asia were reported to roll in the plant to aid healing. Note that Thysanolaena latifolia, a different species sometimes called tiger grass in Nepal (PMID 26230153), is botanically distinct and lacks the same triterpenoid profile.
How do you use tiger grass in your skincare routine?
Tiger grass can be applied topically via serums, creams, balms, and sheet masks formulated with Centella asiatica extract or its standardized triterpenoid fraction (TECA). It is best applied after cleansing and toning, before heavier moisturizers, and is suitable for daily use both morning and evening. It pairs well with hydrating ingredients like hyaluronic acid and niacinamide but should be introduced gradually alongside active exfoliants like retinoids.
Can tiger grass help with acne scars and hyperpigmentation?
Yes, Centella asiatica's asiaticoside stimulates type I collagen production through Smad pathway activation, which can improve the texture and appearance of atrophic acne scars over time. Madecassoside provides antioxidant protection to melanocytes, helping to modulate melanin production and reduce post-inflammatory hyperpigmentation. Clinical evidence supports its use alongside other scar-remodeling treatments for enhanced outcomes.
Are there any side effects of tiger grass supplements or creams?
Topical Centella asiatica products are well-tolerated with a low incidence of adverse effects, though allergic contact dermatitis has been reported in rare cases. Oral supplements taken at high doses over extended periods have been linked to isolated reports of hepatotoxicity, and potential CYP2C9/CYP2C19 interactions may affect metabolism of drugs like warfarin. A patch test is recommended before first topical use, and medical consultation is advised before oral supplementation.
What is the difference between tiger grass extract and whole tiger grass powder?
Tiger grass extract is a concentrated form where active compounds like asiaticoside and madecassoside are isolated and standardized, typically offering higher potency per dose compared to whole powder. Extracts are absorbed more efficiently by the body and require smaller serving sizes, while whole powder provides the full plant matrix with additional fiber and phytonutrients. For skin and cognitive benefits, standardized extracts (usually 10:1 or higher) deliver more consistent and faster results than whole powder forms.
Is tiger grass safe to take during pregnancy and breastfeeding?
While tiger grass has a long history of traditional use, clinical safety data specifically for pregnancy and breastfeeding is limited, and most manufacturers recommend avoiding supplementation during these periods as a precaution. Topical application of tiger grass creams is generally considered safer than oral supplements during pregnancy, but consultation with a healthcare provider is essential before use. Breastfeeding mothers should also seek medical guidance, as the transfer of tiger grass compounds into breast milk has not been thoroughly studied.
Does tiger grass interact with blood thinners or diabetes medications?
Tiger grass may have mild anticoagulant properties and could theoretically potentiate the effects of blood thinners like warfarin or aspirin, though clinical evidence is limited. Additionally, because tiger grass supports metabolic balance and may influence blood sugar regulation, individuals taking diabetes medications should monitor their response and consult their healthcare provider before supplementing. Combining tiger grass with these medication classes requires medical supervision to avoid adverse interactions or dosage adjustments.
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