Drug interactions
Sulfasalazine + Venlafaxine
Severity: Minor
Sulfasalazine and Venlafaxine: minor interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Sulfasalazine can cause gastrointestinal irritation and, rarely, blood dyscrasias, and venlafaxine impairs platelet function. The combination may modestly increase bleeding risk.
What this interaction means in plain words
Sulfasalazine and Venlafaxine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Venlafaxine-related platelet serotonin depletion with possible gastrointestinal mucosal irritation.
What to do
No routine change is needed. Watch for bleeding or bruising and check blood counts if clinically indicated.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Venlafaxine
- Isocarboxazid + Venlafaxine Contraindicated
- Methylene blue + Venlafaxine Contraindicated
- Phenelzine + Venlafaxine Contraindicated
- Procarbazine + Venlafaxine Contraindicated
- Rasagiline + Venlafaxine Contraindicated
- Safinamide + Venlafaxine Contraindicated
Frequently asked questions
Can I take Sulfasalazine with Venlafaxine?
MediHelp rates the interaction as minor. Sulfasalazine and Venlafaxine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Sulfasalazine can cause gastrointestinal irritation and, rarely, blood dyscrasias, and venlafaxine impairs platelet function. The combination may modestly increase bleeding risk.
How serious is the interaction between Sulfasalazine and Venlafaxine?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No routine change is needed. Watch for bleeding or bruising and check blood counts if clinically indicated.
What other medicines interact with Venlafaxine?
MediHelp also lists interactions of Venlafaxine with, for example, Isocarboxazid, Methylene blue, Phenelzine. The full list is on the Venlafaxine page.
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