Tulsi (Expanded) for Blood Sugar Regulation

Research suggests that tulsi (Ocimum sanctum/tenuiflorum) may support blood sugar regulation through multiple proposed mechanisms, including normalizing glucose metabolism, inhibiting carbohydrate-digesting enzymes, and modulating targets such as DPP4 and PPARγ that are relevant to type 2 diabetes management. The body of evidence spans narrative reviews, systematic reviews of clinical studies, and computational modeling work, with the human clinical literature — including one systematic review covering 62 Ayurvedic diabetes studies and another covering 24 human tulsi trials — generally pointing in a supportive direction, identifying tulsi alongside a small number of other herbs as warranting more rigorous investigation. Studies indicate that bioactive compounds including eugenol, isoeugenol, rosmarinic acid, ursolic acid, and select terpenes may each contribute to these observed effects, though most mechanistic findings come from in vitro, animal, or computer-based studies rather than controlled human trials. The overall limitation of this evidence base is that study designs, preparations, and dosing vary considerably across the literature, and researchers consistently call for more standardized, well-controlled clinical trials before firm conclusions about effectiveness can be drawn.