You might be confusing the OJ/vitamin C with the properties of grapefruit juice, which is well-established to alter the properties of various liver enzymes, particularly those which typically metabolise psychedelic / hallucinogenic drugs. Wikipedia has a brief blurb about it:
https://secure.wikimedia.org/wikipedia/en/wiki/List_of_drugs...
Actually, it does mention orange juice as containing flavonoids which may have some (albeit lesser) effect on drug metabolism.
Yeah. Actually, it looks like there is mention in the literature (Simon Wills Drugs of abuse, 2nd Ed, 2005)[1] of vitamin C in fruit juice, or Ammonium Chloride to acidify urine to promote sequestration and removal of amphetamine metabolites.
I'm not sure if/how that translates to other drugs like Psilocybin, but it does raise some interesting questions.
Do you by any chance have a source regarding the original
"enhances the experience" statement? (for my own curiosity really - I'm not saying that you're wrong or misinformed)
No real source, but googling "vitamin c mushrooms ehance" brings up lots of forum posts etc. In my case, this knowledge is just the sort of folk-wisdom picked up from a misspent youth :). I have heard lots of stuff to explain it, but all of that falls squarely in the "probably pseudoscience" and [citation needed] categories.
Actually, it does mention orange juice as containing flavonoids which may have some (albeit lesser) effect on drug metabolism.