Dolorelax for muscle tissue is a natural source of rapidly released heat which is suitable for any personal requirements if used correctly, and stays active at a pleasant temperature for several hours. Dolorelax is appropriate for soothing the acute suffering caused by rheumatic ailments and alleviating period cramps and pains (dysmenorrhea). Dolorelax calms arthrits pain. The medical device consists of a blend of ferrous powders which generate a rapid oxidation process in contact with oxygen in the air, producing heat.