Does Metoprolol Interact with Prazosin?
The metoprolol tartrate label states that beta blockers can increase the postural blood-pressure drop associated with the first dose of prazosin, possibly by preventing reflex tachycardia.
Label evidence and limitations
Named-drug label evidence. This is a comparison label located during the audit, not a recovered original ingestion source. Product and patient circumstances still require pharmacist or prescriber assessment.
Product scope: Oral metoprolol tartrate tablets; first-dose prazosin context.
Read the DailyMed label: Metoprolol Tartrate
Section: Drug Interactions — Alpha-Adrenergic Agents. Compared version 2, label date 2026-03-05. The linked label may be updated after this comparison.
The original record has no saved label identifier. This comparison uses a label located during the source check; it does not recover the original extraction source.
AI-assisted source comparison dated 2026-10-16. This is a comparison of label text, not independent clinical review or an individual safety assessment. CDI's stored severity category is not an FDA-assigned rating. Confirm your exact medicines and formulations with your pharmacist or prescriber before changing treatment.
- Stored CDI classification
- Moderate
- Management
- Confirm exact products with your pharmacist
- Data Source
- Product label via NLM DailyMed
What To Tell Your Doctor or Pharmacist
If you are taking Metoprolol and your doctor is considering prescribing Prazosin (or vice versa), make sure to:
- Inform your doctor and pharmacist of all current medications, including over-the-counter drugs and supplements
- Ask whether the benefits of combining these medications outweigh the risks for your specific situation
- Ask what symptoms to watch for that would indicate the interaction is causing problems
- Never stop or change either medication without first consulting your healthcare provider