“…The frequency with which drugs are used for self-poisoning has changed over the years. While barbiturates were used increasingly during the 1950s and 1960s (Kessel, McCulloch, and Simpson, 1963) their use has declined recently (Smith and Davison, 1971). In the survey although barbiturates were still used very commonly, particularly by men, minor tranquillizers played a particularly prominent part in self-poisoning cases.…”