Curcumin
Turmeric (Curcuma longa), containing the active ingredient curcumin, is a potent antioxidant which may have a multitude of health benefits. Turmeric extract, concentrated to high levels of curcuminoids, is becoming a popular joint health and arthritis ingredient due to its natural COX-2 inhibiting properties. Turmeric is also being investigated for its potential benefits for Alzheimer's, pancreatic cancer, colorectal cancer and multiple myeloma.