Evigrade
Moderate

Acetylsalicylic acid × venlafaxine

Antiplatelet agents (low dose) / NSAIDs (analgesic dose)×SNRI (serotonin-norepinephrine reuptake inhibitor)

Mechanism

Venlafaxine (SNRI) depletes the platelet serotonin pool, impairing primary haemostasis. With aspirin: additive GI bleeding risk.

Symptoms

Gum bleeding, epistaxis, bruising without trauma, black or tarry stools. Severe cases: GI bleeding.

Management

The combination is acceptable at low aspirin doses (75–100 mg). PPI cover with pantoprazole is mandatory. Alternative antidepressants with minimal platelet effect: mirtazapine or agomelatine.

Sources

All interactions

Acetylsalicylic acid and venlafaxine: interaction, management, sources – Evigrade