Other uses not proven with research have included rheumatoid arthritis, muscle pain, gout, skin conditions, migraine headaches, high cholesterol, and stomach problems. It is not certain whether devil's claw is effective in treating any medical condition. Medicinal use of this product has not been approved by the FDA. Devil's claw should not be used in place of medication prescribed for you by your doctor. Devil's claw is often sold as an herbal supplement. There are no regulated manufacturing standards in place for many herbal compounds and some marketed supplements have been found to be contaminated with toxic metals or other drugs. Herbal/health supplements should be purchased from a reliable source to minimize the risk of contamination. Devil's claw may also have uses other than those listed in this product guide.