Meriva® is a patented formulation of curcumin, a dietary phenolic, with soy lecithin (non-GMO).
The two compounds form a non-covalent adduct in a 1:2 weight ratio, and two parts of microcrystalline cellulose are then added to improve formulation, with an overall contents of curcumin of 20%.
Kidd, P. M., Alt. Med. Rev. 2009, 14, 226-246.