Veterinarian's Best Rub-On Hip & Joint Glucosamine is a new generation formula, scientifically designed to provide rapid, deep relief for your dog's muscles and joints. This product is not greasy on the skin or haircoat. Contains: Aloe Vera Gel, MSM (Methylsulfonylmethane), Glucosamine HCI, Lecithin, Vitamin C, Vitamin E, Neem Oil, Natural Fragrance.