Just curious, do you have any weight/diabetes issues going on?  Weight meaning "Are you overweight?"

If so, dropping some weight might just be the ticket.

Dude, in my opinion your 90% of the way to solving your problem by simply admitting it here. If I were you, I go see my doctor for a check up. More than likely it's nothing, but you never know. Everyone has off nights, and the first time you are with some of these drop-dead beautiful women in the valley it can be intimidating.

I remember when I was 18, it seemd like I could get aroused and "finish" during a red light. That is just not going to happen these days. Relax, don't worry, and things will be OK.

To answer your question, I do not know of any herbal substitute for the blue pill, and I'd be leary of dropping serious coin on these herbal concoctions. JMHO.......

I only use them when im down in mexico mongering in the red ight districts myself. my favorite was nasutra however since the spoil sports at the fda found out it had the chemical analogue of sidenfil citrate they banned it.

there really isnt much to use that actually works ive had some decent results with horny goat weed but nothing to compare with vitamin v for those times when you just want one more shot to end the day.

you can buy them online however if you really need them for day in and day out activity go see a doctor.
ive known guys who died from self medicating ( saw a dude in the phillipines drop dead from a viagra well Penagra the indian generic they sell down there overdose).
you need the correct dosage and given the way the performence enchancers work guessing is a real bad idea.

and he parlayed it into a juicy endorsement deal!  (Seriously, friend, get yourself to a doctor, make Pfizer a bit richer, and quit worrying about problems you can solve with one little pill!)

My 1st question is why you dont see your doctor and try the blue (or yellow) pill. Anything you take is going to work in a similiar manner and you should have a physical (besides its a good idea in general to have a physical at least once every 2 years over 40).

Rize2 (google it) is the only one that I know really does work for sure across a wide sample of guys (Vitamin Shoppe normally carries it). "Longjack" is a slang name for a tree root that also has some effect for many.

Proper diet, exercise and water intake go along way. As you get older your body needs more help. 50mg of zinc and 2000mg of Vitamin C daily also can help alot...