Is Bilberry Safe with Insulin?
Free · No account · based on published sources including NIH ODS, FDA drug labels, and peer-reviewed literature
Do not start bilberry supplements without informing your diabetes care provider if you are on insulin therapy. Increase blood glucose monitoring frequency. Have fast-acting glucose available in case of hypoglycemic episodes.
Why this interaction occurs
Bilberry has documented hypoglycemic properties through multiple mechanisms including alpha-glucosidase inhibition and improved insulin sensitivity. Additive effects with exogenous insulin may cause clinically significant hypoglycemia, particularly in type 1 diabetes patients.
Evidence
Evidence level: moderate.
Reported safety data
The FDA’s adverse event reporting system (FAERS) has received 146,861 reports mentioning Insulin. This reflects reported cases involving the medication in general — not confirmed causation, and not specific to the Insulin + supplement combination on this page.
FAERS reports are voluntary and cannot prove that a drug caused an event. Do not use report counts to assess the safety of this specific drug-supplement pair.
Frequently asked questions
Related interactions
All Bilberry interactions → · All Insulin interactions →
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Educational only — not medical advice.
Always confirm with your doctor or pharmacist.