I tried does when I started to be interested in PE.
They do a small tingle in the shaft, with a bit of more blood flow, nothing more.
No grow, and certainly not worth the price.
If your looking for ways to grow and do PE. There are other ways that really work.
But Pill, ANY pill dont work. They are usualy made of a bland of horny goat, Arginnine and the likes. What they do mostly, they promote blood flow and augment a bit the libido. But it stop there. You can buy those supplement separatly for a lot less.