The Three Stigmata of Palmer Eldritch by Philip K. Dick [1978 U.K. PAPERBACK]
UK PAPERBACK  TRIAD GRAFTON BOOKS
Third triad printing from 1987. Mass market UK.
Book is excellent. Like new w/ some tanning to pages.
In the overcrowded world and cramped space colonies of the late 21st century, tedium can be endured through the drug Can-D, which enables users to inhabit a shared illusory world. When industrialist Palmer Eldritch returns from an interstellar trip, he brings with him a new drug, Chew-Z. It is far more potent than Can-D, but threatens to plunge the world into a permanent state of drugged illusion controlled by the mysterious Eldritch.