Helps maintain optimal joint function. Healthy joint cartilage is crucial to joint utility. Contains Glucosamine, Hydrochloride 99%, Sodium Chondrotin Sulfate 95% Ascorbic Acid & Maganese. Initial administration period is 4 - 6 weeks. At this time administer 1 tablet daily for 10 - 24 lb size dog, 2 tablets daily for 25 - 49lb, 3 tablets daily for 50-100lb, 4 tablets daily for over 100lb dogs. The maintenance level is 10-24lb 1/2 tablet daily, 25-49lb 1 tablet daily, 50-100lb 1-2 tablets daily and dogs over 100lbs 2 tablets daily. Once consistent improvement has been seen, these maintenance levels may be reduced to an every other day administration. The maintenance level can be used long-term on healthy dogs to help with joint support.