Drug interactions
Betaxolol + Formoterol
Severity: Moderate
Betaxolol and Formoterol: moderate 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
Betaxolol can blunt the bronchodilator effect of formoterol and may precipitate bronchospasm in patients with asthma or COPD. Cardioselectivity reduces but does not remove this risk.
What this interaction means in plain words
Betaxolol and Formoterol can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Betaxolol belongs to Cardiovascular; Formoterol belongs to Respiratory.
Why it happens
Pharmacodynamic antagonism at beta-adrenergic receptors.
What to do
Monitor respiratory symptoms and lung function. Use the lowest effective betaxolol dose in reactive airway disease, or choose a non-beta-blocker alternative.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Formoterol
- Adagrasib + Formoterol Major
- Amiodarone + Formoterol Major
- Amisulpride + Formoterol Major
- Amitriptyline + Formoterol Major
- Amoxapine + Formoterol Major
- Arformoterol + Formoterol Major
Other interactions of Betaxolol
- Acebutolol + Betaxolol Major
- Aldesleukin + Betaxolol Major
- Amifostine + Betaxolol Major
- Amiodarone + Betaxolol Major
- Atenolol-chlorthalidone + Betaxolol Major
- Atenolol + Betaxolol Major
Frequently asked questions
Can I take Betaxolol with Formoterol?
MediHelp rates the interaction as moderate. Betaxolol and Formoterol can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Betaxolol can blunt the bronchodilator effect of formoterol and may precipitate bronchospasm in patients with asthma or COPD. Cardioselectivity reduces but does not remove this risk.
How serious is the interaction between Betaxolol and Formoterol?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor respiratory symptoms and lung function. Use the lowest effective betaxolol dose in reactive airway disease, or choose a non-beta-blocker alternative.
What other medicines interact with Formoterol?
MediHelp also lists interactions of Formoterol with, for example, Adagrasib, Amiodarone, Amisulpride. The full list is on the Formoterol page.
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