Normally, I really dig these 1960's and 1970's psychedelic freak-out movies. Sometimes though they seem to not only be ABOUT people who are on serious drugs, but also made BY people who were on serious drugs.
This movie has one of the worst theme songs I've ever heard, though I suppose it would be a difficult challenge indeed to sing the phrase "microscopic liquid subway to oblivion" in a tuneful way. The movie itself is a mess.