Increasingly, however, clinical trials involving humans are demonstrating that enhanced versions of curcumin can cross the blood/brain barrier and achieve the beneficial effects demonstrated in the in-vitro and animal studies. As a result, many curcumin supplements are being marketed with claims of greatly enhanced efficacy. But it's difficult for the consumer to figure out which product is best.
Nearly three years ago, I wrote about one version -- curcumin BCM-95 -- that was endorsed by a well-respected authority. BCM-95 continues to be used in many curcumin products.
Bioperine, a supplement extracted from the fruit of black pepper, also is being used to enhance the bio-availability of curcumin. It has been suggested that the reason peasants in India have the lowest rate of Alzheimer's in the world is that they mix black pepper and turmeric/curcumin as spices in their curry diets.
But how to decide which curcumin product is best?
ConsumerLab's Rating of Curcumin Products
When I want reliable information on a supplement and the versions of it being marketed, the first place I turn is https://www.consumerlab.com/. ConsumerLab does independent testing of over 1,000 herbs, vitamins and supplements.