I have no idea...

[danjo69]

I started reading a story in 1968 when I was in the Army stockade for going
AWOL and never got to finish it. I hope someone can tell me what the
title of it is.
A guy was in a theater (I don't remember how he got there) and met a female
that either was or looked just like Jean Harlow. She gave him some sort of
pill and when he took it, he found himself in a triangle shaped tunnel that
was or seemed to be endless. Trying to find a way out, he would come across
huge blue bubble like things. when he struck this thing it would burst
like a water balloon and he would drink the liquid. This is about as far as I
got when they came to me to tell me I was being discharged. I wish I'd taken
the book with me, but I was in too much of a hurry to get home.

[slaven41]

Sorry, I got nothin'. I tried Googling some key phrases from your description, but couldn't come up with anything. Good luck. Sounds interesting.

--Dave