Lambert Kay Sure Grow 100 Calcium Tablets for Dogs, 100 Count is a calcium, phosphorus and vitamin supplement formulated to promote optimal bone, ligament and tendon development in puppies during the period of rapid growth. Developed by a veterinarian, Sure Grows unique formulation of calcium, phosphorus and vitamins A and D is a Lambert Kay exclusive and ensures that dogs have all the necessary nutrients for proper bone, tendon and ligament development. The phosphorus used in Sure Grow is highly available ensuring a proper calcium to phosphorus ratio vital to proper bone development. Sure Grow 100 is beneficial for all dogs but especially for larger breeds prone to bone, tendon and ligament development issues. Sure Grow is also recommended for pregnant and lactating females to provide nutrients to their puppies. Proudly Made In the USA.