Vetri-Disc Back Support Formula (180 Caps) for dogs is recommended to support proper function of the spine and connective tissue. Directions For Use: Under 15 lbs: 1 capsule daily. 16 to 35 lbs: 2 capsules daily. 36 to 80 lbs: 3 capsules daily. over 80 lbs: 4 capsules daily. If giving more than one capsule daily, divide between AM and PM. by Vetri-Science Laboratories.