Nitropaste is a transcutaneous cardiac nitrate a form of the more familiar 'nitroglycerin' that heart patients put under the tongue to relieve anginal chest pains.
A more exotic approach to alleviating backaches is the transcutaneous nerve stimulator that is made by numerous manufacturers and sells for $500 to $600.
NeuroMetrix Announces Sleep Indication for SENSUS™ Pain Management System NeuroMetrix, Inc. , a medical device company focused on the treatment of the neurological complications of diabetes, reported that the SENSUS Pain Management System became the first transcutaneous electrical nerve stimulator to receive 510 clearance from the U.S.
July 8, 2013 - Business Wire via Yahoo! Finance