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. Author manuscript; available in PMC: 2011 Jul 1.
Published in final edited form as: J Gerontol Nurs. 2009 Sep;35(9):28–38. doi: 10.3928/00989134-20090731-01

Table 2. Antidepressant Medications and Recommended Dosing for Use in Older Adults.

Generic (Brand) Name Initial Dosage Maintenance Dosage Major Adverse Effects
Selective serotonin reuptake inhibitors (SSRIs)
Citalopram (Celexa®) 10 mg to 20 mg per day 10 mg to 40 mg per day Nausea, vomiting, dry mouth, headache, somnolence, insomnia, increased sweating, tremor, diarrhea, sexual dysfunction
Escitalopram (Lexapro®) 10 mg per day 5 mg to 20 mg per day Suicidal behavior, fever, insomnia, dizziness, somnolence, paresthesia, light headedness, migraine, tremor, vertigo, abnormal dreams, irritability, fatigue, lethargy, palpitations, hypertension, flushing, chest pain, nausea, diarrhea, constipation, indigestion, vomiting, dry mouth, heartburn, flatulence, gastroesophageal reflux, ejaculation disorder, urinary frequency
Fluoxetine (Prozac®) 10 mg per day 5 mg to 40 mg per day Nausea, vomiting, diarrhea, insomnia, nervousness, restlessness, agitation, anxiety, light headedness, drowsiness, fatigue, headache, tremor, initial weight loss, possible long-term weight gain, hyponatremia, syndrome of inappropriate antidiuretic hormone (SIADH), increased risk of bleeding (upper gastrointestinal and intraoperative) with co-administration of nonsteroidal anti-inflammatory drugs, aspirin, and warfarin (Coumadin®).
Paroxetine (Paxil®, Paxil CR®) 10 mg per day 5 mg to 40 mg per day Headache, somnolence, dizziness, insomnia, dry mouth, constipation, diarrhea, ejaculatory disturbances, weakness, diaphoresis
Sertraline (Zoloft®) 12.5 mg to 25 mg per day 25 mg to 200 mg per day Insomnia, somnolence, dizziness, headache, fatigue, dry mouth, diarrhea, nausea, ejaculatory disturbances
Non-SSRIs
Buproprion (Wellbutrin®, Wellbutrin SR®, Wellbutrin XL®) 37.5 mg to 75 mg per day; SR: 75 mg to 100 mg every morning; XL: 150 mg every morning 150 mg in two to three divided dosages; SR: 100 mg twice per day; XL: 150 mg per day Dizziness, anxiety, agitation, dry mouth, insomnia, headache, nausea, constipation or diarrhea, tremor
Duloxetine (Cymbalta®) 20 mg per day 20 mg to 60 mg per day Nausea, dry mouth, constipation, poor appetite, diarrhea, headache, insomnia, somnolence, fatigue, diaphoresis, dizziness
Mirtazapine (Remeron®, Remeron SolTab®) 7.5 mg at bedtime 7.5 mg to 45 mg at bedtime Somnolence, increased appetite with weight gain, increased serum cholesterol, constipation, dry mouth
Venlafaxine (Effexor®, Effexor XR®) 25 mg twice per day; XR: 37.5 mg per day 150 mg per day in divided dosages; XR: 150 mg per day Headache, somnolence, dizziness, insomnia, nervousness, nausea, dry mouth, constipation, anorexia, abnormal ejaculation/orgasm, weakness, diaphoresis
Tricyclic antidepressant drugs
Desipramine (Norpramin®) 25 mg per day 100 mg per day Serotonin syndrome, anticoagulant effect with warfarin, cardiotoxicity, orthostasis, hypotension, hypertension, anticholinergic effects, tremor, agitation, insomnia
Nortriptyline (Pamelor®) 10 mg to 25 mg per day 50 mg per day Orthostasis, hypertension, myocardial infarction, ataxia, extrapyramidal symptoms, seizures, glucose dysregulation, SIADH, sexual dysfunction, dry mouth, anorexia, constipation, nausea, vomiting, diarrhea, weight gain/loss, urinary retention, impotence, blood dyscrasia, increased levels in liver function test values, paresthesia, mydriasis