Pine bark extract can help protect against arthritis the effects of diabetes cancer heart disease & problems associated with circulation such as swelling & varicose veins. Other reported benefits include enhanced memory fewer effects from stress better joint flexibility & decreased inflammation. Pine bark extract supplements could be even more effective in eliminating free radicals than vitamins C & E. Pine bark extract is made from the bark of the maritime pine tree (Pinus Pinaster) which contains naturally occurring chemicals called proanthocyanidins. Proanthocyanidins which are also found in grapes are very strong antioxidants. Antioxidants are compounds that block the action of free radicals activated oxygen molecules that can damage cells.