I don't think changing the brand is enough. If I were you I'd do what I suggested brodo to do or at least get something that is not diluted or liquid spray for that matter and has at least a 5 gram serving in order for it to be potent. Everytime I search the internet I look for the supplements that keep appearing in the subject I search and have lab studies done on them. For HGH that is gaba, arginine and lysine combined, and l-dopa bean (mucuna pruriens). Brodo, I wouldn't have purchased the
penis bible because everything on penis growth is already on the internet. You just have to search and search. I first tried different methods which seemed to work the best until I got to supplements. Since I've been searching the stuff that comes up on penis nutrition, dht, hgh, acetylcholine, PGE-1, dopamine, nitric oxide, and pde-5 blocker are the ones that come up. Search under each subject very, very thoroughly and narrow it down to the safest alternative for each one, then narrow it down to the best deal, then you've just saved a bunch of money. I searched for at least a couple years on and off to come up with my list of supplements. It sometimes takes that long when you're waiting for new information to be provided. While I was searching I found a pdf link on this website
http://www.shockingpenisenlargementtruth.com talking about the
penis bible which lead me to join this forum because of this thread. I had previously read Dr. Lin's herballove.com site then went back to it after reading the
penis bible home page. Look and looked for ways to supplement my penis after reading that. Went back and back to look at things I already looked at before and did more research on it to see if I will find out something new on it. Look for the main factors that are at work in everything you search. Don't always believe that the people selling a product has done more research than you have. Find out what works and doesn't work by others experience. Know what makes sense and doesn't make sense. This is just to show you how you search things to avoid wasting money by the way.