Supplements and Diabetes medication

Ashwagandha may lower blood sugar. Additive glucose-lowering could increase hypoglycemia risk with insulin or sulfonylureas. Monitor glucose.

Berberine lowers blood sugar. Its effect in trials was comparable to some diabetes drugs. Combined, hypoglycemia is possible — monitor closely.

High-dose niacin can raise blood sugar. Doses of 1.5 g/day or more are most likely to worsen insulin resistance and raise glucose. Monitor your blood sugar if you take it.

Curcumin may lower blood sugar. Possible additive effect with diabetes medication. Monitor glucose.

Chromium may slightly lower blood sugar. Effects are small and inconsistent, but monitor glucose when starting.

Alpha-lipoic acid may lower blood sugar. Monitor glucose when combining with insulin or sulfonylureas.

Ginseng may lower blood sugar. Possible additive effect with diabetes medication.

Glucosamine may raise blood sugar in some people. NIH notes that glucosamine may increase blood glucose in some people. Check your readings for a few weeks after starting.

Black seed may lower blood sugar. Meta-analyses report lower fasting glucose and HbA1c. Monitor your blood sugar when starting it.

Inositol can improve insulin sensitivity. In trials it lowered fasting insulin and insulin resistance. Monitor your blood sugar if you take glucose-lowering medication.