Our Flexwize liquid glucosamine complex for dogs and cats has 12 active ingredients to help maintain healthy joints. Our most important ingredient is pharmaceutical grade glucosamine, split equally between glucosamine hydrochloride (HCl) and glucosamine sulphate. Flexwize contains 10 further active ingredients: Chondroitin, MSM, Yucca Extract, Manganese, Bromelain, Omega-3, Omega-6, Vitamin A, Vitamin C and Vitamin E. Our Flexwize for Pets comes in 2 sizes, the 275ml bottle for dogs over 20Kg in weight (or for multiple pets), and the smaller 60ml bottle for dogs under 20Kg in weight and for cats. Small dogs (under 5Kg) and cats should be given 1ml (approximately one quarter of a teaspoon) per day with their food. Dogs between 5Kg and 20Kg should be given 2ml (approximately one half a teaspoon) per day with their food. For dogs over 20Kg please purchase our 275ml bottle with built in measuring reservoir.