Bilberry can have an effect on blood sugar levels and blood pressure.
- Acta Diabetol. 2004 Sep;41(3):91-8. -- What do herbalists suggest to diabetic patients in order to improve glycemic control? Evaluation of scientific evidence and potential risks. -- Cicero AF, Derosa G, Gaddi A.
Bilberry possesses antiplatelet activity which can interact with aspirin and related medications.
- J Clin Pharm Ther. 2002 Dec;27(6):391-401. -- Herbal medication: potential for adverse interactions with analgesic drugs. -- Abebe W.