(Vets Plus) Probios Plus Natural E Bovine One Gel provides a source of beneficial bacteria and natural Vitamin E for beef and dairy cows and calves. Probios Plus Natural E Gel contains a source of live (viable) naturally occurring microorganisms, plus 50 IU vitamin E per gram. Dosage for beef and dairy cattle: 5 gm for newborns, 10 gm for calves under 400 lbs., 15 gm for cattle over 400 lbs., 30 gm for dairy cows at freshening. Repeat as needed, particularly during times of stress. Dosing gun is required for administration of 300 gm size.