Codeine is a narcotic pain-reliever and cough suppressant similar to morphine and hydrocodone. Moreover, a small amount of codeine is converted to morphine in the body. The precise mechanism of action of codeine is not known; however, like morphine, codeine binds to receptors in the brain (opioid receptors) that are important for transmitting the sensation of pain throughout the body and brain. Codeine increases tolerance to pain, decreasing discomfort, but the pain still is apparent to the patient.
âA topical preparation of a skin lightening composition containing MSM in an amount of approximately 1 to 25 weight percent, such as about 15%, or greater than 20% by weight, is applied to a personâs skin in a daily regimen.
MSM supplement may be beneficial to those on a protein restricted diet, for example due to kidney disease. MSM has been used extensively to relieve arthritic pain, joint pain, back pain, migraines, skin conditions, allergies, autoimmune diseases, digestive issues, and to promote the healing of burns and scars. It may be beneficial for people with these health conditions.