SNRIs and norepinephrine reuptake inhibitors

Meet the patient

A 52-year-old building supervisor started venlafaxine XR 75 mg for a first depressive episode with fatigue and poor concentration. Six weeks in, mood is lifting; the dose was pushed to 225 mg when energy lagged. At this review his GP noted BP 158/98 — previously 124/78 — and the practice nurse wonders whether to start an antihypertensive.^[1][13]

The BP is not a new hypertension diagnosis to chase with a second drug. It is the venlafaxine tax: a dose-related noradrenergic effect on diastolic pressure in a minority, exactly the signal Thase quantified across thousands of trial patients. The right move is to hold or reduce the dose and recheck, not to layer amlodipine on top of a fixable cause.^[13]

This leaf deepens the antidepressant class page on the dual-reuptake and noradrenergic agents. The exam question is never "is an SNRI stronger than an SSRI?" — it is "at what dose, with what monitoring, and what will it do to the blood pressure and the liver?"^[1][5][19]

References20ShowHide

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