When should SALONPAS® Pain Relief Patch/SALONPAS® Arthritis Pain NOT be used?

The product should not he used on wounds or damaged skin; if allergic to aspirin or other NSAIDs; right before or after heart surgery; with a heating pad; when sweating (such as from exercise or heat), on the face or over rashes, or if the pouch containing the patch has been open for more than 14 days (to ensure maximum effectiveness). The patch should not be used during the last trimester of pregnancy.