Drug interactions
Amlodipine/Atenolol + Nitroglycerin
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.
Overview
Additive blood pressure lowering with increased risk of dizziness, orthostasis, and syncope; beta-blocker may blunt reflex tachycardia from nitrates.
Mechanism of action
Pharmacodynamic additive effects: nitrate-mediated venodilation/arterial dilation plus calcium channel blockade (amlodipine) and negative chronotropy/inotropy (atenolol) reduce BP.
Clinical management
Use lowest effective doses and titrate gradually; monitor BP and heart rate; counsel on orthostatic precautions; reassess therapy if symptomatic hypotension occurs.
Drug reference
References
- Nitrostat (nitroglycerin) Prescribing Information — FDA Label
- Nitroglycerin: Drug Interactions — Lexicomp
Frequently asked questions
Can I take Amlodipine/Atenolol with Nitroglycerin?
The interaction is rated: Moderate. Additive blood pressure lowering with increased risk of dizziness, orthostasis, and syncope; beta-blocker may blunt reflex tachycardia from nitrates.
How serious is the interaction between Amlodipine/Atenolol and Nitroglycerin?
The interaction is rated: Moderate. Evidence level: Moderate.
How is the interaction between Amlodipine/Atenolol and Nitroglycerin managed?
Use lowest effective doses and titrate gradually; monitor BP and heart rate; counsel on orthostatic precautions; reassess therapy if symptomatic hypotension occurs.
Why do Amlodipine/Atenolol and Nitroglycerin interact?
Pharmacodynamic additive effects: nitrate-mediated venodilation/arterial dilation plus calcium channel blockade (amlodipine) and negative chronotropy/inotropy (atenolol) reduce BP.
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