[nes350]

I'm not sure whether it's comparable, but Chris Squire from Yes spent months "hibernating" in a hotel after a bad trip with homemade acid:

“I’d had lots of good acid trips prior to that. But I made the mistake of trying some acid some friends of mine had homemade. That knocked me back, and I did sort of hibernate in an apartment in Kensington and spent quite a few months — maybe as much as a year — just playing bass.”

Source: http://www.telegraph.co.uk/news/obituaries/11706204/Chris-Sq...