This is a non-drug, non-invasive (unlike traditional acupuncture) with no needle, no AC power involved. There is no side effect ever reported with long term usage. Absoulately safe! However, please consult your doctor before any change of your medication even if you are extremely happy with our product. Also if you doubt any side effect arises during usage, please call Cinuma Inc.at 1-866-418-4247. |