I agree about proper nutrition. When diagnosed, I did a lot of research. I got a Vitamix and have changed my diet about 180 degrees. This particular brand of broccoli sprout extract has come highly recommended by the members of my health care team, that believe in supplements. It is a touchy subject as some people believe in it, other's think it's snake oil. As I said, I was diagnosed at stage 4, 3 years ago and I'm still here. Who really knows for sure, but I don't think the broccoli sprout extract is hurting anything.
The broccoli sprout extract contains high amounts of the active ingredient that would be very difficult to consume thru diet, alone. The Turmeric extract also contains ingredients to enhance absorption and efficacy.