But it wasn't water-soluble, meaning it couldn't be absorbed by the body and would never be effective as a drug. 1  A drug candidate molecule must pass many hurdles to earn the description good medicine.. It must have the best possible activity, solubility, bioavailability, half-life, and metabolic profile.
Vitamin C, or ascorbic acid, may also help protect and strengthen joints by preventing free radical damage to cells. The vitamin also helps form the protein in tendons, ligaments and other tissues. You can get vitamin C in fruit -- especially oranges and grapefruits -- and many vegetables.Vitamin D, which is found in fatty fish, mushrooms, and fortified dairy products, is also made in your skin in the presence of sunlight.everal vitamins and minerals have been studied for their protective effects on the joints. They include copper, selenium and vitamins C and D.
Calcium is probably the nutrient you think of first. But vitamin D is just as important for keeping bones strong and preventing the bone disease osteoporosis. Vitamin D helps your intestines absorb calcium from the food you eat. Getting enough of both nutrients is an important part of making sure your bones are dense and strong. Unlike calcium, which you only get through food, your body makes vitamin D when sunlight hits your skin.