Helios Homeopathy Arnica 200c Homeopathic Medicine - 100 tablets Commonly used for bruises, sprains, muscle aches, wound healing, superficial phlebitis, joint pain, inflammation from insect bites, and swelling from broken bones. More recent studies suggest it may also be helpful in the treatment of burns. Do not take arnica or use it on your skin if you're allergic to sunflowers, marigolds, ragweed, or other plants from the sunflower family.