A pharmacokinetic study suggests the active ingredients in TTFCA are well absorbed in human volunteers.10 After single oral administration of 30 and 60 mg of the extract, maximum plasma levels of asiatic acid were reached at 4.5 and 4.2 hours, respectively. Plasma half-lives were 2.2 hours in the 30-mg dose and 3.4 hours in the 60-mg dose, with no detectable levels of the saponin present 24 hours after single dosing. Seven-day treatment with the herb at the same dosing schedule resulted in higher peak plasma concentrations, longer half-lives, and greater area-under-thecurve values.10