Prior to reading the carcinoid message boards I had never heard of a black raspberry much less black raspberry powder. BRP is a powder made from dehydrated black raspberries. Dr. Woltering at Louisiana State University is a strong proponent of BRP and believes that it inhibits tumor angiogenesis. Tumor angiogenesis is the sprouting of new blood vessels that enable tumors to grow. There has been a lot of research done on BRP, mostly in labs and on mice, but no human clinical trials that I know of. Dr. Woltering’s paper on BRP and its angiogenesis properties can be found here…..