Cade’s (1) discovery in 1949 of lithium’s therapeutic success in mania has
precipitated two decades of continuing investigations, clinical trials and controversial
findings. With few exceptions numerous investigators have confirmed
Cade's original observations concerning lithium’s effectiveness in combating
mania. Under double-blind conditions, 4 of these studies (2, 3, 4, 5) have shown
lithium to be superior to placebo in reducing manic symptoms. Apart from these
4 double-blind studies, an estimated 6,000 patients in many countries have been
given lithium by a variety of research teams numbering near 400. A review of
these open studies to date reveals that on the average 80 % of all manic patients
treated have responded quickly and satisfactorily to lithium carbonate. Of note is
the fact that this success in mania was independent of age, sex or duration of the
manic disorder.