Cramp 911, developed by a pharmacist who is THE innovator in cramp and muscle spasm relief technology for muscle cramps and back and neck spasms. Cramp 911 muscle relaxing roll-on is the product of over 10 years of work with patients, athletes, and trainers. Other uses have been for muscle soreness and muscle injury. Cramp 911 should be applied directly to the muscle cramp or spasm zone and spread out over the entire muscle. Only a small amount is necessary for results (2 swipes over the affected area). Cramp 911 can be applied during a muscle cramp for relief and can also be applied to aid in relief of muscle cramps before they start. Convenient Roll on Applicator. a few seconds ago 2