What is the most natural sex enhancing drugs?

I had sex once (or rather several times!) with a girl while we were both on LSD. It was a low dose of LSD.

We had some very strong attraction to each other and the LSD completely potentialized this chemistry. It was some of the best sex I've ever had in my life.

I literally felt like I was coming constantly, except I was not. Her experience was apparently beyond this world also.

We kept going for a long time… The LSD was keeping me from ejaculating quickly, which I would have probably done in a normal state.

When the release came, I felt it coming from miles away. It was a very intense experien...