**Active Ingredients for dogs up to 25lbs (per 2 tablets):** SDG Lignan (from Flaxeed Extract)...20 mg
Melatonin...3 mg
Biotin...2 mg
**Active Ingredients for dogs over 25lbs (per 2 tablets):** SDG Lignans (from Flaxeed Extract)...80 mg
Melatonin...6 mg
Biotin...3 mg, Inactive Ingredients: Cellulose, Dicalcium Phosphate, Natural Flavors (Beef and Vegetables), Silicon Dioxide