Foundational guide
What is berberine?
An introduction to berberine, a plant alkaloid, and how Berberine Science reviews the literature.
A practical path through berberine blood-sugar, cholesterol, weight, PCOS, dosing, safety, and product-selection questions.
Berberine is a naturally occurring plant alkaloid found in several botanical sources, including species of the Berberis genus such as barberry, as well as goldenseal and Oregon grape. It has a long history of use in traditional herbal practices and is sold today as a dietary supplement. Berberine Science is an independent resource that reviews the published research on berberine and describes the design and reported outcomes of individual studies, with links to the primary literature. The content here is educational and should not be taken as medical advice; speak with a qualified clinician before using any supplement.