Letrozole + Propranolol

SAFE — No Known Interaction

🟢 SAFE — Propranolol and Letrozole can be taken together safely.

Evidence level: MODERATE

What this interaction means

Propranolol and Letrozole are generally considered safe to use together. No adverse interactions have been reported in medical literature.

How it works (mechanism)

No clinically significant interaction between Propranolol and Letrozole has been identified in medical literature.

Practical advice

No interaction documented between Propranolol and Letrozole. Always inform your healthcare provider about everything you take.

Timing

Take Propranolol at the same time daily — never stop abruptly (risk of rebound hypertension). Letrozole follows its prescribed schedule. Beta-blockers can be taken with or without food.

Risk factors

Higher risk for: those with asthma or COPD, bradycardia, diabetes (may mask hypoglycemia symptoms), elderly, concurrent calcium channel blocker use, or peripheral vascular disease.

Symptoms to watch for

Monitor blood pressure and heart rate when combining Propranolol with Letrozole. Watch for: dizziness, lightheadedness (especially when standing up), fatigue, cold extremities, slow heartbeat, or swelling in ankles/feet. Check your blood pressure at home if possible. When to seek emergency help: Fainting, chest pain, heart rate below 50 bpm, severe dizziness, difficulty breathing, or allergic reactions (swelling of face, lips, or tongue).

What to tell your doctor

No urgent discussion needed, but keep your provider informed. Say: "I take Propranolol alongside Letrozole — anything I should know?"

Safer alternatives

These medications are safe to take together at standard doses. Continue taking as prescribed and keep your pharmacist informed of your complete medication list.

Frequently asked questions

Can I take Letrozole and Propranolol together?

Propranolol and Letrozole are generally considered safe to use together. No adverse interactions have been reported in medical literature.

When should I take Letrozole vs Propranolol?

Take Propranolol at the same time daily — never stop abruptly (risk of rebound hypertension). Letrozole follows its prescribed schedule. Beta-blockers can be taken with or without food.

What symptoms should I watch for if I combine Letrozole and Propranolol?

Monitor blood pressure and heart rate when combining Propranolol with Letrozole. Watch for: dizziness, lightheadedness (especially when standing up), fatigue, cold extremities, slow heartbeat, or swelling in ankles/feet. Check your blood pressure at home if possible. When to seek emergency help: Fainting, chest pain, heart rate below 50 bpm, severe dizziness, difficulty breathing, or allergic reactions (swelling of face, lips, or tongue).

Are there safer alternatives to combining Letrozole with Propranolol?

These medications are safe to take together at standard doses. Continue taking as prescribed and keep your pharmacist informed of your complete medication list.

What should I tell my doctor about taking Letrozole and Propranolol?

No urgent discussion needed, but keep your provider informed. Say: "I take Propranolol alongside Letrozole — anything I should know?"

Explore more interactions

Or browse the full interaction database (121,000+ pairs).