
This was news to me, that bee propolis is a potent COX-2 inhibitor.
Finally, bee propolis, a sticky resin collected by bees from pines and other trees, is "one of the most potent COX-2 inhibitors," according to Dr. Gaynor. Dr. Rao has found bee propolis very effective for cancer prevention in animals, noting, "You can use it in lower doses than curcumin because it is highly absorbable." It is typically sold as 500 mg capsules.