Bob Severin,
About 8 years ago I met another engineer that had knee problems so bad he could hardly walk. He was taking pain medication and walking with a cane. He took the supplements I suggested, and 9 months later was walking normally without any pain at all.
Vitamin C can cause loose bowels if taken in large doses, but 4000 mg is not high enough to cause this problem.
Gelatin is pure collagen protein and it what you connective tissue is made out of. It is the glue that holds your body together.
For you body to make collagen protein, it needs vitamin C and copper. The alfalfa makes the vitamin C work better. I think it must contain bioflavinoids. Glucosamine seems to make everything else work better.
Twice in the past, people that I knew had arthritis in their hands. Both were cured with vitamin C alone, and very quickly.