Gotu Kola (Centella asiatica) leaf extract is an herbal supplement with a long history of use for sharpening the mind and speeding up wound healing. People take it now mainly to improve mental clarity, memory, and calm anxiety.
You typically find it in capsules or tinctures that list their asiaticoside or triterpene strength. Daily doses usually fall between 60 and 180 mg of the extract, though the exact number depends on the product. You can take it with food or on an empty stomach.
Long term high dose use has been linked to liver problems. Gotu Kola can also mess with blood thinners like warfarin and with diabetes drugs. Do not take it if you are pregnant or nursing.