Gotu kola, a tasteless and odorless plant native to South Asia, Madagascar and South Africa, has traditionally been used in Chinese and Ayurvedic medicine to treat wounds, to improve mental clarity and to treat skin diseases such as psoriasis. Western herbalists use gotu kola to treat conditions such as venous insufficiency, varicose veins, anxiety, scleroderma, insomnia and anxiety. Few studies have been performed to determine the effects of gotu kola on humans. Consult your health care provider before beginning use of gotu kola or any herbal supplement.
Tumor Growth
Gotu kola contains asiaticoside, a chemical that stimulates collagen and promotes wound and skin healing. However, according to the University of Maryland Medical Center, asiaticoside has also been associated with the growth of tumors in mice. Based on this association, individuals who have a personal history of precancerous or cancerous skin lesions related to any form of skin cancer are recommended to avoid the use of gotu kola.
Liver Damage
Cases of hepatotoxicity -- liver damage caused by chemicals -- have been reported following the use of gotu kola. Based on this reaction, individuals who suffer from liver disease, or individuals who take medications that affect the liver, should avoid the use of gotu kola to prevent damage to already susceptible livers.
Possible Interactions
In animal studies, gotu kola has been found to increase both cholesterol and blood sugar levels, according to UMMC. These effects may affect the performance of cholesterol-lowering drugs and diabetes medications. Gotu kola also has a diuretic effect on the body. Diuretics or water pills should not be used with gotu kola as this may cause an excessive amount of fluids to be lost from the body, upsetting your electrolyte balance. Gotu kola should also not be used with other herbal diuretics, such as green tea or gingko. Gotu kola should not be used with sedatives or herbs used to treat anxiety or insomnia.
Additional Warnings
Gotu kola should not be used by children, and adults over age 65 should use gotu kola at a reduced dosage as recommended by a health care provider. Reported side effects of gotu kola are rare but include headaches, nausea, dizziness, upset stomach and extreme drowsiness. Burning sensations and skin allergies may result from topical use. Gotu kola may also increase skin sensitivity to sunlight, and the American Cancer Society recommends avoiding sunlight or using sunscreen while taking the herb. Women who are pregnant or breast-feeding should also avoid the use of gotu kola.
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