Farnam Mare Plus Gestation and Lactation Supplement is rich in vitamins A, D and E to help keep mares in optimal body condition during all stages of breeding. Helps maintain optimal body condition of pregnant and lactating mares. Provides nutrients important for the health of mares and their unborn or nursing foals. Helps support fetal development in the last trimester and during lactation. Formulated with a balanced calcium/phosphorous ratio plus protein, amino acids, folic acid and vitamin E to replace the nutrients in the mare?s diet that she?s providing to her unborn foal. Complements your mare's normal diet! Easy-to-feed PELLETS!