Some of these posts make sense, e.g. 'hanging longer', etc.
L-Arginine has a significant role in nitric oxide formation and you may know this little molecule relaxes blood vessels (Viagra and Cialis.)
I can't recall who the Urologist is, by the way, who discovered this effect and the erection which follows (I'd have to google it) but his thinking (relax the blood vessels, smooth muscle tissue expands) was revolutionary at the time, and bang on. So was his demo: he whipped out his dick at a conference, injected it with whatever, and produced a rock-hard boner, proving his point. Hence, Viagra. Don't know whether he got a thundering ovation. :biggrin1:
Another fact (touched on here) - L-A is abundant in red meat but the best source is fish and poultry (something to do with inflammatory factors in meat.) It's claimed L-A helps reduce high BP and abnormal heart function, serum cholestrol and plaque formation (reduces LDL but not HDL), promotes HGH, combats infection (helps immune-system cells), helps improve memory function (I assume by increasing blood flow) - and, helps enhance libido and maintain erections. This is from a Natural Health Laboratory handout.
Doesn't sound too bad..