I believe this is the best, most potent available. The stated dosage is 50mg. More than that gives me a headache, so I know it's the real deal and recommend you don't exceed that amount. The jar is enough for 100 servings so this is a bargain. And it works. For sure. Can't go wrong here.
Im still experimenting with it but when I took I did notice I was more 'handys' with girls. More confident, more talkative. I enjoy it and its worth a buy. It works well in conjunction with other supplements. I took it in combination with Liftmode Green Tea Extract and I felt like I was on top of the world, very at peace.
I've never tried this product before but after a couple days at playing with the dosage I found this product to be amazing. It definitely increases the blood flow to "certain" regions especially at higher dosages and is a good product made from a trustworthy company at an amazing price. Nothing else to really say than give it a try yourself. As a side note your stamina does go dramatically also.