Health Care Professional Information
Centella asiatica, Hydrocotyle asiatica
Indian pennywort, hydrocotyle, mandukaparni, madecassol, TECA, centelase, tsubo-kusa, luei gong gen, idrocotyle, kaki kuda
Gotu kola is an evergreen perennial plant that is prevalent in East Asia and many parts of South Africa. Extracts from the leaf and the whole plant are used for a variety of conditions including venous insufficiency, varicose veins, wound healing, scleroderma, and scars. In vitro and in vivo analyses indicate that gotu kola has neuroprotective (13) and chemopreventive (14) (19) properties, and also protects against cognitive impairment (20). Madecassoside, an active constituent, was shown effective against arthritis (5) and myocardial infarction (4).
Topical application of an asiaticoside extracted from gotu kola enhanced burn wound healing (6), and an herbal preparation containing gotu kola was shown to benefit those with chronic periodontitis (15). Supplementation with gotu kola improved cognitive function and mood in the elderly (7), alleviated generalized anxiety disorder (16) and may help wound healing in diabetic patients (22).
Data also show a reduction in lower extremity edema with gotu kola compared to placebo in patients with chronic venous insufficiency (1) (2) (3).
Gotu kola should not be confused with kolanut. Gotu kola does not contain any caffeine and has not been shown to have stimulant properties.
- Cancer treatment
- Circulatory disorders
- Memory loss
- Varicose veins
- Amino Acids: Alanine and serine (major components)
- Terpenoids: Triterpenes, asiaticoside, brahmoside and brahminoside (saponin glycosides), aglycones, asiaticentoic acid, centellic acid, centoic acid and madecassic acid
- Sesquiterpenes: Caryophyllene, trans-B-farnesene
- Volatile Oils: Germacrene D
- Alkaloid: Hydrocotylin
- Flavones: Quercetin, kaempferol, sesquiterpenes, stigmasterol, and sitosterol
- Other Constituents: Vallerine, fatty acids, resin, and tannins
Mechanism of Action
The triterpenoids are considered to be the active constituents in gotu kola. Asiaticoside, a triterpenoid, demonstrates anti-inflammatory effects by inhibiting lipopolysaccharide (LPS)-induced fever and inflammatory response, including production of serum tumor necrosis factor (TNF)-alpha, interleukin (IL)-6 , prostaglandin E(2) (PGE(2), liver myeloperoxidase (MPO) activity, and expression of brain cyclooxygenase-2 (COX-2) protein (23). Asiaticoside also promotes wound healing by stimulating collagen and glycosaminoglycan synthesis, and angiogenesis (6). Another study showed that a gotu kola extract may regulate stress-induced premature senescence (SIPS) by preventing repression of DNA replication and mitosis-related gene expression (24).
A water extract of gotu kola prevented the formation of intracellular beta-amyloid aggregates in a mouse model of Alzheimer’s disease with high amounts of beta-amyloid (25).
There is preliminary evidence that gotu kola might have sedative and analgesic properties (9).
- Isothankuniside, a glycoside isolated from gotu kola, was shown to reduce fertility in mice (12).
- Contact dermatitis (17) and hepatotoxicity (18) (26) have been reported following use of gotu kola.
- Cytochrome P450 substrates: Gotu kola inhibits CYP 2C9, CYP 2D6, CYP 3A4 (21) and CYP 2C19 (27) in vitro and can affect the intracellular concentration of drugs metabolized by these enzymes.
Literature Summary and Critique
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- Cesarone MR, et al. Effects of the total triterpenic fraction of Centella asiatica in venous hypertensive microangiopathy: a prospective, placebo-controlled, randomized trial. Angiology 2001;52(Suppl 2):S15-18.
- Cesarone MR, et al. Evaluation of treatment of diabetic microangiopathy with total triterpenic fraction of Centella asiatica: a clinical prospective randomized trial with a microcirculatory model. Angiology 2001;52(Suppl 2):S49-54.
- Pointel JP, et al. Titrated extract of Centella asiatica (TECA) in the treatment of venous insufficiency of the lower limbs. Angiology 1987;38:46-50.
- Bian GX, Li GG, Yang Y, et al. Madecassoside reduces ischemia-reperfusion injury on regional ischemia induced heart infarction in rat.Biol Pharm Bull. Mar 2008;31(3):458-463.
- Liu M, Dai Y, Yao X, et al. Anti-rheumatoid arthritic effect of madecassoside on type II collagen-induced arthritis in mice. Int Immunopharmacol. Nov 2008;8(11):1561-1566.
- Kimura Y, Sumiyoshi M, Samukawa K, et al. Facilitating action of asiaticoside at low doses on burn wound repair and its mechanism. Eur J Pharmacol. Apr 28 2008;584(2-3):415-423.
- Wattanathorn J, Mator L, Muchimapura S, et al. Positive modulation of cognition and mood in the healthy elderly volunteer following the administration of Centella asiatica. J Ethnopharmacol. Mar 5 2008;116(2):325-332.
- Newall CA, et al. Herbal Medicines: A Guide for Health-Care Professionals. London: The Pharmaceutical Press; 1996.
- DerMarderosian A, editor. The Review of Natural Products. St. Louis: Facts and Comparisons; 1999.
- Bradwein J, et al. A double-blind, placebo-controlled study on the effects of gotu kola (Centella asiatica) on acoustic startle response in healthy subjects. J Clin Psychopharmacol 2000;20:680-4.
- Klovekorn W, Tepe A, Danesch U. A randomized, double-blind, vehicle-controlled, half-side comparison with a herbal ointment containing Mahonia aquifolium, Viola tricolor and Centella asiatica for the treatment of mild-to-moderate atopic dermatitis. Int J Clin Pharmacol Ther. Nov 2007;45(11):583-591.
- Dutta T, Basu UP. Crude extract of Centella Asiatica & Products Derived from Its Glycosides as Oral Antifertility Agents. Indian J Exp Biol. 1968;(6):181-182.
- Shinomol GK, Muralidhara. Prophylactic neuroprotective property of Centella asiatica against 3-nitropropionic acid induced oxidative stress and mitochondrial dysfunctions in brain regions of prepubertal mice. Neurotoxicology. 2008 Nov;29(6):948-57.
- Bunpo P, Kataoka K, Arimochi H, et al. Inhibitory effects of Centella asiatica on azoxymethane-induced aberrant crypt focus formation and carcinogenesis in the intestines of F344 rats. Food Chem Toxicol. 2004 Dec;42(12):1987-97.
- Sastravaha G, Gassmann G, Sangtherapitikul P, Grimm WD. Adjunctive periodontal treatment with Centella asiatica and Punica granatum extracts in supportive periodontal therapy. J Int Acad Periodontol. 2005 Jul;7(3):70-9.
- Jana U, Sur TK, Maity LN, Debnath PK, Bhattacharyya D. A clinical study on the management of generalized anxiety disorder with Centella asiatica. Nepal Med Coll J. 2010 Mar;12(1):8-11.
- Gomes J, Pereira T, Vilarinho C, Duarte Mda L, Brito C. Contact dermatitis due to Centella asiatica. Contact Dermatitis. 2010 Jan;62(1):54-5.
- Jorge OA, Jorge AD. Hepatotoxicity associated with the ingestion of Centella asiatica. Rev Esp Enferm Dig. 2005 Feb;97(2):115-24.
- Tang XL, Yang XY, Jung HJ, et al. Asiatic acid induces colon cancer cell growth inhibition and apoptosis through mitochondrial death cascade. Biol Pharm Bull. 2009 Aug;32(8):1399-405.
- Kumar A, Prakash A, Dogra S. Centella asiatica Attenuates D-Galactose-Induced Cognitive Impairment, Oxidative and Mitochondrial Dysfunction in Mice. Int J Alzheimers Dis. 2011;2011:347569.
- Pan Y, Abd-Rashid BA, Ismail Z, et al. In vitro modulatory effects on three major human cytochrome P450 enzymes by multiple active constituents and extracts of Centella asiatica. J Ethnopharmacol. 2010 Jul 20;130(2):275-83.
- Paocharoen V. The efficacy and side effects of oral Centella asiatica extract for wound healing promotion in diabetic wound patients. J Med Assoc Thai. 2010 Dec;93 Suppl 7:S166-70.
- Wan J, Gong X, Jiang R, Zhang Z, Zhang L. Antipyretic and Anti-inflammatory Effects of Asiaticoside in Lipopolysaccharide-treated Rat through Up-regulation of Heme Oxygenase-1. Phytother Res. 2012 Sep 12. doi: 10.1002/ptr.4838. [Epub ahead of print]
- Kim YJ, Cha HJ, Nam KH, et al. Centella asiatica extracts modulate hydrogen peroxide-induced senescence in human dermal fibroblasts. Exp Dermatol. 2011 Dec;20(12):998-1003.
- Soumyanath A, Zhong YP, Henson E, et al. Centella asiatica Extract Improves Behavioral Deficits in a Mouse Model of Alzheimer's Disease: Investigation of a Possible Mechanism of Action. Int J Alzheimers Dis. 2012;2012:381974.
- Dantuluri S, North-Lewis P, Karthik SV.Gotu Kola induced hepatotoxicity in a child - need for caution with alternative remedies. Dig Liver Dis. 2011 Jun;43(6):500.
- Pan Y, Abd-Rashid BA, Ismail Z, et al. In vitro modulatory effects of Andrographis paniculata, Centella asiatica and Orthosiphon stamineus on cytochrome P450 2C19 (CYP2C19). J Ethnopharmacol. 2011 Jan 27;133(2):881-7.
- Gohil KJ, Patel JA, Gajjar AK. Pharmacological Review on Centella asiatica: A Potential Herbal Cure-all. Indian J Pharm Sci. 2010 Sep;72(5):546-56.
How It Works
Bottom Line: Gotu kola has not been shown to treat or prevent cancer.
Gotu kola is a plant that contains many biologically active compounds. Although this botanical has been studied extensively in the laboratory, very few studies have been conducted in humans. Laboratory studies have found a range of effects including improved wound healing and anti-inflammatory effects. Studies in humans have suggested that gotu kola can decrease venous pressure in people with venous insufficiency and may be able to relieve anxiety.
- To treat burns
Laboratory data and few human studies suggest that gotu kola aids in wound healing.
- To lower high blood pressure
Several clinical trials show that gotu kola can reduce venous hypertension in patients with chronic venous insufficiency, but there is no evidence that this herb can treat typical (arterial) high blood pressure.
- To treat psoriasis
Laboratory experiments suggest that gotu kola can reduce inflammation, but human data are lacking.
- For sedation
One preliminary study in humans found that gotu kola can decrease the “startle response.”
- To treat chronic venous insufficiency
Several clinical trials support this use.
In this randomized, placebo-controlled, double-blind study, 28 participants (> 61 years of age) received either gotu kola extracts (250, 500, or 750 mg daily) or placebo to determine the effect of gotu kola on cognitive function and mood. After 2 months, cognitive function and mood were determined. The greatest improvements in mood and cognitive function were seen in those who received the 750 mg dose of gotu kola.
Do Not Take If
- You are taking drugs that are substrates of CytochromeP450 2C9, CYP 2D6, CYP 3A4, and CYP2 C19enzymes (Gotu kola may increase the risk of side effects of these drugs).
- Contact dermatitis
- Liver toxicity
- Reduced fertility in female mice
- Gotu kola should not be confused with kolanut. Gotu kola does not contain any caffeine and has not been shown to have stimulant properties.
- Depending on where gotu kola is grown, the content of active compounds in this herb can vary widely.
Last updated: September 18, 2012