VetFORM Osteo Guard contains Glucosamine, MSM and Calcium support joint function and mobility, bones, teeth, skin and coat for both canine and feline. Glycine, an amino-acid, promotes strong muscles and may support a healthy immune system and mental focus. Magnesium helps support a healthy blood sugar balance. ACTIVE INGREDIENTS: Guaranteed Analysis of Ingredients per 1/2 teaspoon (2,500 milligrams) MSM: Methylsulphonylmethane...653 mg Glucosamine Hydrochloride...852 mg Glycine (L): L-Glycine...583 mg Vitamin C: Calcium ascorbate...291.6 mg Calcium: Calcium ascorbate...32.4 mg (Elemental 32.4 mg Ca) Magnesium: magnesium carbonate...87.9 mg (Elemental 46.3 mg Mg)