Combination therapy that couples classical antidepressants with other
psychoactive compounds is one of the major therapeutic strategies in t
herapy-resistant depression. The authors review reports on the antidep
ressive effects of the mood stabilizers carbamazepine and valproate an
d focus on the pharmacodynamic and clinical aspects of combining these
compounds with antidepressant drugs. In addition, a pivotal study (N
= 10 outpatients) demonstrates the use and efficacy of a low-dose comb
ination therapy of carbamazepine and amitriptyline. It is concluded th
at low-dose combination of classical antidepressants and mood stabiliz
ers appears to be well tolerated and highly effective.