Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Vaccinium myrtillus(trade name)
Visual acuity improvement, atherosclerosis, venous insufficiency, varicose veins, diabetes mellitus, diarrhea, hemorrhoids, peptic ulcer disease, osteoarthritis and chronic fatigue syndrome.
ClassificationTherapeutic: ocular agents
Anthocyanidins in bilberry have a variety of effects including increased glycosaminoglycans synthesis, decreasing vascular permeability, reducing membrane thickness, redistribution of microvascular blood flow and formation of interstitial fluid.
Decreased blood glucose.
Metabolism and Excretion: Eliminated by the kidneys.
Contraindicated in: Hypersensitivity or allergy to bilberry; Leaves are potentially toxic with chronic use of 1.5 g/kg/day.
Use Cautiously in: Diabetic patients; Patients at risk for bleeding; Obstetric: Avoid use in pregnancy due to lack of safety data.
Adverse Reactions/Side Effects
- low blood sugar
- upset stomach
InteractionsMay ↑ effects of anticoagulants and antiplatelet drugs and ↓ platelet activity.May ↑ effects of antidiabetic agents and cause hypoglycemia.Avoid use with chromium-containing herbs and supplements (bilberry contains chromium).Avoid use with herbs with hypoglycemic properties.
Oral (Adults) 80-480 mg of bilberry extract daily in 2-3 divided doses.
- Monitor BP periodically during therapy, coagulation panel, blood glucose.
- Lab Test Considerations: Monitor coagulation studies in patients on anticoagulants and antiplatelet agents.
- Monitor blood glucose periodically during therapy. May cause hypoglycemia.
Potential Nursing DiagnosesActivity intolerance (Indications)
- Administer without regard to food.
- Instruct patient to take bilberry as directed.
- Improvement in vascular insufficiency.
- Decrease in diarrhea.
A shrub, the berries of which contain anthocyanosides; bilberry is said to prevent atherosclerosis, and has been used internally for eye problems (cataracts, glaucoma, macular degeneration, myopia, night blindness, diabetes) and GI complaints (colic, constipation, diarrhoea, hypertension), and externally for burns, haemorrhoids, dermatitis, spider nevi and varicose veins.
n See bilberry.