The authors reviewed the literature on the pharmacotherapy of geriatric mood disorders. Based on the evidence available, we have proposed: (i) that although any antidepressant is assumedly equal in antidepressive efficacy, ones with weak anticholinergic and antialpha1 effects are preferable in geriatric patients; (ii) that augmentation therapy with lithium and methylphenidate has modest evidence of efficacy in this population; (iii) that modified electroconvulsive therapy is safe and effective for severe and psychotic depression in the elderly; and (iv) that lithium remains the first choice for geriatric bipolar disorder, although its optimal serum level may be lower than in younger adults.