One of the major side-effects of drugs such as morhpine is massive constipation -- pain so intense that, according to this article, many terminally-ill cancer patients refuse the morphine, choosing the pain of their disease over the pain of their constipation. Fortunately, a drug
has been invented that ends the pain of constipation in less than a minute.
"By immediate response," the scientist explains, "we mean you did not want to be between the subject and the bathroom."