Rankings / Mood, Anxiety & Stress

SNRIs (venlafaxine / duloxetine)

Mood, Anxiety & Stress · Dual SERT/NET reuptake inhibitor

Tier B

Reviewed by Read Off Label · Last reviewed · How we grade

serotoninprescription
6.8 / 10
Tier B
Ev 8 Bn 8 Sf 5

Bottom line

Read Off Label grades SNRIs (venlafaxine / duloxetine) as B (6.8/10) based on strong evidence, strong benefit magnitude, and a med-risk safety profile.

Useful when depression coexists with pain or fatigue.

Studied, labeled, or reported-use context: Venlafaxine 37. — Rx; not individualized guidance.

What the evidence says

Useful when depression coexists with pain or fatigue. Venlafaxine discontinuation can be particularly severe; clinical taper and cross-taper protocols are used. Duloxetine has FDA pain indications (diabetic neuropathy, fibromyalgia, chronic musculoskeletal pain). A 2025 systematic review/meta-analysis quantified increased GI bleeding risk for serotonergic antidepressants, and observational data link SNRIs to fall-related hospitalizations in older adults.

Mechanism

Block both serotonin and norepinephrine reuptake; pain and fatigue indications in addition to depression/anxiety; venlafaxine primarily serotonergic at low doses, adds norepinephrine >150 mg

Studied, labeled, or reported dose & route

Venlafaxine 37.5-300 mg XR; duloxetine 30-120 mg PO daily

This records doses and routes described in studies, approved labeling, clinical practice, or documented use. It is not individualized guidance and does not establish safety; context changes with indication, formulation, health history, monitoring, and other medicines.

Citations

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Common questions

What does the evidence show about SNRIs (venlafaxine / duloxetine)'s effects?
Read Off Label rates the evidence for SNRIs (venlafaxine / duloxetine) as Strong and the benefit magnitude as strong, producing an overall grade of B (6.8/10). Useful when depression coexists with pain or fatigue.
What safety findings are reported for SNRIs (venlafaxine / duloxetine)?
SNRIs (venlafaxine / duloxetine) has a med risk profile in the database. Med (similar sexual side effects to SSRIs; more BP elevation at higher doses; severe discontinuation syndrome with venlafaxine due to short half-life; nausea, sweating; GI bleeding risk — increased with NSAIDs/antiplatelets/anticoagulants) Legal status: Rx.
What doses or routes are reported for SNRIs (venlafaxine / duloxetine)?
Venlafaxine 37.5-300 mg XR; duloxetine 30-120 mg PO daily This is context from studies, approved labeling, clinical practice, or documented use; it is not individualized guidance and does not establish safety.
How does SNRIs (venlafaxine / duloxetine) work?
Block both serotonin and norepinephrine reuptake; pain and fatigue indications in addition to depression/anxiety; venlafaxine primarily serotonergic at low doses, adds norepinephrine >150 mg

This is an independent synthesis of published research by a non-clinician. Scores are opinions supported by citations, not prescriptions. See the full disclaimer and methodology for how this score was produced and what it does and doesn't mean.