(Conklin) Fastrack Equine Microbial Pack contains a source of live (viable) naturally occurring microorganisms, a source of proteases which can hydrolyze proteins, a source of amylase which can hydrolyze starch, a source of cellulase which can hydrolyze fiber and a source of lipase which can hydrolyze fatty acid. Total lactic acid-producing bacteria is guaranteed at 2.5 billion colony-forming units per ounce of Fastrack. Give horses 1/2 to 2 oz daily. Horses at maintenance level: 1 oz daily. Growing horses: 1/2 to 2 oz daily. Lactating mares and horses being trained or heavily exercised: 1 to 2 oz daily.