Contains lactobacillus acidophilus, bifidobacterium thermophilum, bifidobacterium longum, streptococcus faecium, lactose enzymes, dried whey, dextrose, vegetable oil, silicone dioxide and potassium sorbate. Dosage: Newborn foals - 10 gm at 24 hours, repeat at 48 hours; Weanlings - 10 gm at weaning, repeat on day 3; Horses - 10 gm after worming, 10 gm 8-10 hours prior to anticipated stress or condition changes, repeat as necessary.