Works great on arthritis, as well as carpel tunnel. Love how it heats up and tingles my aches and pain away in my knotted muscles. Using this and cold packs together is even better.
Bought some for my mother as her arthritis has gotten really bad lately. She says it works on everything except her knees, but those are the worst for her. Also she is able to sleep, due to the fact there is much less pain.