verboten

"Unfortunately Charlie was not sober, strictly speaking, nor had he been sober for the previous six months. On the contrary: now that he was no longer drinking, he was taking more pills than ever. As he'd later admit to AA (claiming he didn't realize, at the time, that it was verboten): 'I couldn't meet a friend for lunch, I couldn't write a line, I couldn't attend an AA meeting, without the help of these drugs.'"
~~ from Blake Bailey's Farther and Wilder: The Lost Weekends and Literary Dreams of                                           Charles  Jackson