Over the counter?

I just ran across a bottle of Zyrexin that I bought about a year ago in my dresser drawer. To get the best out of my PE routine I have been taking L-arginine and maca capsules daily. I’m curious if anyone has tried over the counter male enhancements like Zyrexin or Extenze with their routine and if they have seen any results from it?

Also for sex, has anyone used these over the counter male enhancements? I bought the Zyrexin about a year ago and used it on a few occasions. There wasn’t that big of a difference, stamina wise. My erections seemed to be stronger, but I often wondered if that was just a placebo effect?

Ideas?