Since I have been taking South Australian Shark Cartilage 750mg capsules, my aches and pains have improved a great deal. I have more movement in my joints and I am able to continue with Tai Chi lessons quite freely. I have been taking them for over eight months now and I am very pleased with the results - far better than anything else I have tried. South Australian Shark Cartilage is so much better and healthier than using chemicals and preservatives; this is why I use this product. Thanks again!