Biocare vitamin c 1000 90 tablet vitamin c 1000 provides 1000mg of citrus free magnesium ascorbate a low acid form of vitamin c with the bioflavonoids bilberry and grapeseed extract additional information convenient 1 a day tablet provides a readily absorbable form of vitamin c and magnesium buffered low acidity form of vitamin c to reduce stomach irritation suitable for individuals requiring a citrus free vitamin c supplement tried and tested for wada world anti doping agency ban