I had very bad knee pain from squatting, shoulder and elbow used to kill me, fingers joints would hurt and sciatica. I can go running again.
Look it up- It completely rebuilds joints and cartilage. Once you get over what it is made of then you can stomach it better. It helps tremendously when you have excellent results.
Friends that have had stomach pain have also benefited from it tremendously. I get the Knox brand Gelatin from a place called Smart and Final. It costs 10.00 for a pound.
I have tired MSM (helped quite a bit), Cissus Quarangularis and chondroitin etc.