Wow, thanks for the detailed reply. I was wondering whether it was something to do with dopamine levels/receptors, but I suppose it's all pretty closely linked.

Hi All, I've been struggling with sometimes getting and more often, maintaining, an erection for intercourse ( I use meds for confidence, but even then, they aren't super effective), but I can when watching porn. I've abstained from porn for a fair few months now, but haven't noticed any improvement...

Thanks, yep, I'm not sure whether there is a similar certification in the UK.

I sometimes wonder whether the quality of these supplements is quite low, but there seems to not be any real way of telling.

Thanks for the reply. I had a basic testosterone test done last September and it came back as 10.3 nmol/L (sorry, I'm the UK, hence the units of measurements). I then had a much more comprehensive one carried out more recently and have attached the results, but basically, it came back as all fine, w...

I find that more often than not (unless on meds), that my erections feel exceptionally weak, I.e. very much half-mast. Could it be due to something muscular, or lack of? I should add that I'm 38, very active, not over-weight, eat fairly healthily, given up smoking (I was only ever a social smoker) a...

Hi Dirk, L-arginine is also the immediate precursor of nitric oxide -- an important molecule for dilating the blood vessels and improving blood flow. ... Because nitric oxide is essential for developing an erection, L-arginine is viewed as a potential non-pharmaceutical treatment for ED. Citrulline ...

Hi All, I thought I would come on here and introduce myself. I'm a very active and generally pretty healthy 38-year-old UK based male, but have had erection problems pretty much since I was in my late teens. Back then, I could generally rely on getting decent erections, but as I entered my mid-20s, ...