Dietary Supplement, Vegan, Gluten Free, Non-GMO. Curcumin is known for its health-promoting properties. NaturesPlus Curcumin 500, featuring Longvida® Optimized Curcumin®, provides superior absorption. Its patented Solid Lipid Curcumin Particle (SLCP™) technology delivers more antioxidant activity by increasing the amount of polyphenols as well as the enzymatic antioxidants that the body naturally produces.