... .2.MSM is used for chronic pain, osteoarthritis, joint inflammation, rheumatoid arthritis, osteoporosis, bursitis, tendonitis, tenosynovitis, musculoskeletal pain, muscle cramps, ... Solution for Pain. There isn’t much published scientific research to support its use.4.MSM is also used ... muscle. Thus, it is important in conditions such as arthritis, muscle pains, bursitis, etc.3.MSM should be considered ...