Active ingredients: Glucosamine HCI 99% (shellfish), mucopolysaccharides (porcine source of chondroitin sulfate and hyaluronic acid), yucca root, nettle leaf, alfalfa extract, celery seed, black cohosh root, ginger root extract, devil’s claw extract, turmeric extract, cayenne pepper. Inactive ingredients: dried chicken liver, dried honey, glycerin, mixed tocopherols, potato flour, potato starch, safflower oil, salt, sorbic acid, sunflower lecithin. Suggested Use: Initial (2-4 months): under 20lbs–1/2 chew. 20-40lbs–1 chew. 40-60 lbs–2 chews. 60-80 lbs–3 chews. 80-100 lbs–4 chews. 100+ lbs– 5 chews. Maintenance: under 20lbs–1/4 chew. 20-40lbs–1/2 chew. 40-60 lbs–1 chew. 60-80 lbs–1 1/2 chews. 80-100 lbs–2 chews. 100+ lbs–2 1/2 chews.