Bilberry Standardized Extract
Bilberry Standardized Extract
Bilberry, Huckleberry, Whortleberry
Vaccinium myrtillus L.
PART OF THE PLANT USED
Bilberry is a perennial shrub native to Northern Europe, Northern America, and Canada. The Bilberry plant produces a fruit similar to the American blueberry, but containing higher quantities of constituents useful for visual acuity and night blindness (nyctalopia).
Eye strain/visual acuity
Day and night blindness
Capillary fragility and hyper-permeability
Advanced diabetic vascular complications
CNS vascular disorders
Bilberry is rich in antho-cyanosides. Over 15 different anthocyanosides have been found in Bilberry. Anthocyanosides help to maintain the integrity of capillaries and to stabilize collagen. Anthocyanosides are also potent antioxidants. Numerous clinical studies have shown that Bilberry is effective in the treatment of circulation disorders, varicose veins, and other venous and arterial disorders. The anthocyanosides protect veins and arteries by stabilizing the phospholipids of the endothelial cells, and by increasing the synthesis of collagen and mucopolysaccharides which give the arterial walls their structural integrity. Antho-cyanosides also prevent the aggregation and adherence of platelets to endothelial surfaces. Studies have also shown that Bilberry can act as a coadjutant in hemeralopy and diabetic retinopathy and can stimulate rhodopsin production.
TOXICITY, CAUTIONS & CONTRAINDICATIONS
No known toxicity
DIRECTIONS FOR USE
2-4 25 mg. capsules/day
Extraction with hydromethanolic solution
25 % anthocyanosides calculated as anthocyanidins
ANALYSIS STANDARDIZED EXTRACT
Product: Vaccinium myrtillus L. fruit Type: Standardized extract Quality: wild-crafted Color: dark, red-violet powder Standardization: 26 % anthocyanosides (anthocyanidins) Solubility in chloroform insoluble Solubility in acetone insoluble Sulfated ash: 0.5 % Heavy metals: Less than 40 ppm Total residual organic solvents 0.435 % Total residual aerobic microbial count: less than 1000 cfu/g Fungi less than 100 cfu/g S. aureus, Salmonella, E. coli, P. aeruginosa absent
Bettini, V. et al. (1984) Effects of Vaccinium myrtillus anthocyanosides on vascular smooth muscle. Fitoterapia 55:265-72.
Blumenthal, M (Ed.): The Complete German Commission E Monographs: Therapeutic Guide to Herbal Medicines. American Botanical Council. Austin, TX. 1998.
Bottecchia, D. et al. (1987) Preliminary report on the inhibitory effect of Vaccinium myrtillus anthocyanosides on platelet aggregation and clot retraction. Fitoterapia 48:3-8.
Detre, A. et al. (1986) Studies on vascular permeability in hypertension: action of anthocyan-osides. Clin. Physiol. Biochem. 4:143-9.
Jonadet, M. et al. (1983) Anthocyanosides extracted from Vitis vinifera, Vaccinium myrtillus, and Pinus maritimus. I. Elastase-inhibiting activities in vitro. II. Compared angiopro-tective activities in vivo. J. Pharm. Belg. 38:41-46.
Lietti, A. and Forni, G. (1976) Studies on Vaccinium myrtillus anthocyanosides. I. Vasoprotective and anti-inflammatory activity. Arzneim Forsch. 26:829-32.
Mian, E. et al. (1977) Anthocyanosides and the walls of the microvessels: further aspects of the mechanism of action of their protective effect in syndromes due to abnormal capillary fragility. Minerva Med. 68:3565-81.
Ronziere, M.C. et al. (1981) Influence of some flavonoids on reticulation of collagen fibrils in vitro. Biochem Pharmacol. 30:1771-6.
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