Turmeric Curcumin 300 mg from Thompson provides the anti-inflammatory and antioxidant benefits of this common cooking spice. The active compound within turmeric root is curcumin, a polyphenol that acts as a potent antioxidant within the body to fight off free radicals that can cause oxidative stress. Turmeric also has anti-inflammatory effects and supports the immune system. Taking turmeric on a regular basis can also improve skin’s appearance. Thompson’s Turmeric Curcumin 300 mg is guaranteed to contain 95 percent curcumins per serving, equivalent to 285 mg.