Berberine is a plant compound with effects on blood sugar and metabolism, sometimes marketed online as a natural alternative to metabolic medications. It is available as a supplement, unlike the prescription drugs in this category.
Berberine has reasonable evidence for modestly lowering blood sugar and improving some metabolic markers, working partly through similar pathways to some diabetes medications. The popular framing of it as natural Ozempic considerably overstates its effect, which is real but far more modest.
Commonly causes digestive side effects (cramping, diarrhoea, constipation). Importantly, it interacts with many medications by affecting how the liver processes them, and it should not be combined with GLP-1 medications or other diabetes drugs without medical guidance, as this risks dangerously low blood sugar.
Do not combine berberine with prescription diabetes medication or GLP-1 drugs without medical supervision, the combination can lower blood sugar too far. If pregnant or breastfeeding, avoid it. Check interactions if you take any regular medication, as berberine affects drug metabolism broadly.
Inexpensive to moderate, sold as a monthly supply.
Research on berberine and blood glucose. Drug interaction literature (CYP enzyme effects). Educational information only.