Msm is an over-the-counter health product available at reasonable prices, whose active ingredient [sulfur] is one of the main limiting factors in regeneration of collagen. [Tendon, ligament and cartilage are all basically made of collagen]. Along with glucosamine, condroitan, and saMe [for our American friends who can get it] it forms an effective combo for collagen repair and lubrication of the joints. It’s also a heck of an antihistamine for you terminal sufferers.