Curcumin C3 Complex® has the highest amount of human clinical studies and is used in more universities, research centers and hospitals versus any other brand. It is also GRAS (Generally Recognized as Safe) approved, has safety dosage limit studies and has been used for over 20 years in millions of people worldwide compared to others. Some companies that claim higher bioavailability are actually measuring metabolites of curcuminoids such as glucuronides, not curcuminoids itself. These metabolites recently have been shown in studies NOT to have anti-inflammatory effects. Thus, they are providing only a lower percentage of curcuminoids.
~Dr. Sunil Pai