Table 2.
Drug (Brand) | Formulation | FDA indications in anxiety | Starting Dose | Titration | Dosage Range | Side Effects |
---|---|---|---|---|---|---|
Desvenlafaxine (Pristiq) | 50– 100 mg | none | 50 mg every other day | Increase to 50 mg/day after 4–7 days | 50 mg every other day to 50 mg every day | Nausea, dizziness, insomnia, hyperhidrosis , constipation, somnolence, anxiety, sexual dysfunction, orthostatic hypotension, hypertension, hyponatremia , elevated lipids |
Duloxetine (Cymbalta) | 20, 30, 60 mg | GAD | 20 mg/day | Increase by 20 mg after 7 days | 20–60 mg | Nauseas, dry mouth, constipation, poor appetite, diarrhea, headache, insomnia, somnolence, fatigue |
Venlafaxine (Effexor) | 25, 37.5, 50, 75, 100 mg XR: 37.5, 75, 150 mg |
GAD, Social anxiety disorder, Panic disorder | IR: 25mg XR: 37.5 mg/day |
IR: Increase by 25 mg every 4–7 days as tolerated to 25 mg tid; if response is inadequate after 3 more weeks, increase slowly to 75 mg tid XR: Increase to 75 mg (target dose) after 4–7 days; may need to increase to 150 mg or 225 mg if response is inadequate |
IR: 50 mg tid XR: 150 mg/day |
headache, dizziness, insomnia, hot flush, hyperhidrosis , nausea |
Vortioxetine (Trintellix) | 5, 10, 20 mg | none | 5mg/da y | May increase to 10mg/day | 5– 10mg/da y | Nausea, constipation, vomiting |
Mirtazapine (Remeron) | Tablets: 7.5, 15, 30, 45mg OD tablets: 15, 30, 45 mg |
none | 7.5mg qpm | Increase 7.5–15mg every 1–2 weeks | 7.5– 45mg/da y | Somnolence, increased appetite with weight gain, increased serum cholesterol, constipation, dry mouth. |