a detailed analysis of the results of a multi-centre clinical trial shows that , while the relapse rate following recovery from an operationally defined depressive illness was smaller among patients subsequently treated with either amitryptiline or lithium than with a placebo , there was no clinically significant difference between the prophylactic efficacy of the 2 antidepressants .
C0011581
depressive illness
C0002600
amitryptiline