Vita-FlexPure C contains only absolutely pure vitamin C (ascorbic acid). No fillers of any kind have been added. Pure C is not only the purest available form of vitamin C, its also your best value. Vita-Flex Pure C is a useful, highly palatable addition to equine feeding programs. Enclosed scoop holds 1/4 ounce. Feed 1 scoop daily for maintenance. During periods of stress, feed up to 2 scoops daily. Increase feeding of large breeds proportionately according to body weight in excess of 1,000 pounds. Severely stressed horses may benefit from additional amounts. Keep cool and dry. Reseal after each use.