Clinical research supports arnica's effectiveness. It is also possible that arnica has preventive benefits. Many marathoners use it before they race. Arnica preparations are available in health food stores, certain pharmacies, and mail order homeopathic pharmacies. Arnica should always be used in conjunction with necessary medical treatment.
Homeopathic arnica comes in a variety of strengths.
I have purchased it in strength 15 and in strength 30. I have not yet started taking it. So far, I have had a variety of suggestions as to when, how many, and how to take these granules. I have heard that while taking oral homeopathic arnica one should also drink a lot of water. Sorry to deluge you with questions, but I will very much appreciate your informed responses.