Seven Seas Jointcare Supplex Capsules are supplements that help to maintain normal body function, particularly in the joints and muscles. The capsules also contain the vitamins C, D, and E, each of which has its functions. Vitamin C – helps the immune system maintain normal function after exercise Vitamin D – Helps the muscles and bones stay healthy Vitamin E – Helps protect the cells in the body These capsules also contain omega-3, which helps to prevent heart disease, and glucosamine which helps prevent stiff joints and muscles.