A plant alkaloid found in barberry, goldenseal and several other species
The most-studied blood-sugar ingredient outside prescription medication — with a dosing schedule that trips up most people who buy it standalone.
per day, split into 2–3 doses. Its short half-life is why single-daily-dose products are a real compromise on the studied protocol.
Diarrhoea and cramping are the most common complaints, usually dose-related.
Effects can stack with metformin or other glucose-lowering drugs — coordinate dosing with your doctor.