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Available products include tea, 1:5 tincture in 45% alcohol, 1:1 liquid extract in 25% alcohol (6), and capsules of 250, 455, and 510 mg. The French Pharmacopoeia requires 45% ethanol for the fluid extract and 60% ethanol for the tincture (8). It is recommended that 0.5-1 mL of liquid extract or 1-2 mL of tincture be taken three times a day (6). The tea is made from 0.3-1 g of dried berries infused in hot water and taken three times a day (4,6). A typical therapeutic dose of extract, standardized to contain 1.8% vitexin-4 rhamno-side, is 100-250 mg three times daily. A standardized extract containing 18% procyanidolic oligomers (oligomeric procyanidns) is dosed at 250-500 mg daily (9).

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