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.
How well vitamin D works depends on the amount of other vitamins and minerals that are present in your body. The other vitamins and minerals needed to help vitamin D work well are called cofactors. To get the most benefit from vitamin D, you must have other cofactors in your body. Vitamin D has a number of cofactors; the ones listed below are the most important. Magnesium.