BENICIA, Calif.--InterHealth Nutraceuticals introduced UC-II, an undenatured type II collagen. Also referred to as "native" type II collagen, the ingredient works with the immune system to promote joint health. Research has supported the use of undenatured type II collagen in the treatment of rheumatoid arthritis (RA). InterHealth holds several patents on the production of the ingredient and its use for treatment in RA. In addition to UC-II, InterHealth markets CitriMax, ChromeMate®, Protykin® and L-OptiZinc®. For more information, visit www.InterHealthUSA.com or Booth #1307 at SupplySide West.