Best form of L-arginine is L-arginine HCL, powder form. It tastes terrible, but works better than the pills. This comes from someone who has tried it all...
I don't doubt it. I think most of the effects of this stuff was psychosomatic.
The packaging said to take it an hour before sexual activity... prior to taking them, I took some measurements -- which is to say, I suppose, that I simply verified my usual dimensions of 5-7/8" by 4-1/2" -- and had eaten maybe a couple of hours beforehand. Half an hour in, I was producing a noticeable amount of pre, even with just a semi, and my cock felt significantly warmer than usual.
Just before the hour mark, I noticed that the glans was more "inflated" than usual, so taking several measurements for verification, I found that I had gained about a quarter of an inch both ways, give or take 1/16 of an inch or so. The pills did little for my stamina, which is what they claimed to be for on the packaging, as it didn't take any extra effort to orgasm (which I finally decided to do after half an hour) but I hit an all new high score of eleven spurts where previously it had been eight. For about fifteen minutes or so afterwards, I had a bit of a throbbing headache.
I might give some of the other pills we carry a shot, but for an average of five bucks a pop, I'm not too sure I'm going to make this a regular habit. And I've concluded that even if most of it
was in my head, it was still pretty fun.