Bilberry

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Are there any interactions with medications?



Medications for diabetes (Antidiabetes drugs)
Interaction Rating: Moderate Be cautious with this combination.
Talk with your health provider.

Bilberry leaves might decrease blood sugar. Diabetes medications are also used to lower blood sugar. Taking bilberry leaves along with diabetes medications might cause your blood sugar to go too low. Monitor your blood sugar closely. The dose of your diabetes medication might need to be changed.

Some medications used for diabetes include glimepiride (Amaryl), glyburide (Diabeta, Glynase PresTab, Micronase), insulin, pioglitazone (Actos), rosiglitazone (Avandia), chlorpropamide (Diabinese), glipizide (Glucotrol), tolbutamide (Orinase), and others.



Medications that slow blood clotting (Anticoagulant / Antiplatelet drugs)
Interaction Rating: Moderate Be cautious with this combination.
Talk with your health provider.

There is some concern that bilberry might slow blood clotting. Taking bilberry along with medications that also slow clotting might increase the chances of bruising and bleeding. However, there is not enough information to know if this is a serious concern.

Some medications that slow blood clotting include aspirin, clopidogrel (Plavix), diclofenac (Voltaren, Cataflam, others), ibuprofen (Advil, Motrin, others), naproxen (Anaprox, Naprosyn, others), dalteparin (Fragmin), enoxaparin (Lovenox), heparin, warfarin (Coumadin), and others.

Dosing considerations for Bilberry.

The following doses have been studied in scientific research:

BY MOUTH:
  • The typical dose of the dried, ripe berries: 20-60 grams daily. People also drink a type of tea made from 5-10 grams (1-2 teaspoons) of the mashed berries.
  • A dose of 160 mg of bilberry extract taken twice daily has been used in people with diseased retinas.
  • Bilberry leaf is commonly used as a tea. The tea is prepared by steeping 1 gram, 1-2 teaspoons, finely chopped dried leaf in 150 mL boiling water for 5-10 minutes, and then straining. Don't use bilberry leaf long-term.

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