Arnica 30C, Pain Relief, Meltaway Pellets In Each Pellet: Active Ingredients: Arnica Montana 30C HPUS (0.44 mg), Relieves Muscle Pain & Stiffness, Swelling Form Injuries, Discoloration From Bruises. Inactive Ingredients: Lactose, Sucrose. The letters HPUS indicate that the component in this product if officially monographed in the Homeopathic Pharmacopoeia of the United States.