Ive used Horbaach P5P for my past few cycles based on the advice of a YouTube channel, but still have caber on hand. I cant say i “feel” a difference, bit mood has been stable and no prolactin or progesterone issues as of yet. NPP is almost always in my cycle, unless im runnin tren, which is not often. I havent needed my caber in quite a while if that says anything about the effectiveness of P5P, but I’m a moderate dose guy.