Stopain Clinical Gel has specially formulated penetration enhancers to provide FAST pain relief for your clients. Formulated with 10% menthol plus dimethylsulfone (MSM) and glucosamine, Stopain® Clinical Gel works on contact to provide fast, long-lasting pain relief of sprains, strains, bruises, arthritis, muscle aches, joint and back pain. Stopain Clinical Migraine & Headache is a safe, effective topical gel for migraine and headache relief. It does not contain acetaminophen, addictive opioids, aspirin, caffeine or other NSAIDs. There are no known drug interactions and can be used in conjunction with prescription medications.