Drug interactions
Formoterol + Marijuana
Severity: Minor
Formoterol and Marijuana: 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
Cannabis can cause tachycardia and may add to the heart rate increase caused by formoterol. Smoked cannabis may also irritate the airways.
What this interaction means in plain words
Formoterol and Marijuana 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
Additive tachycardic effects; mechanism not firmly established.
What to do
Counsel patients with cardiac disease to be aware of palpitations, and monitor heart rate if both are used.
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 Formoterol
- Adagrasib + Formoterol Major
- Amiodarone + Formoterol Major
- Amisulpride + Formoterol Major
- Amitriptyline + Formoterol Major
- Amoxapine + Formoterol Major
- Arformoterol + Formoterol Major
Frequently asked questions
Can I take Formoterol with Marijuana?
MediHelp rates the interaction as minor. Formoterol and Marijuana have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Cannabis can cause tachycardia and may add to the heart rate increase caused by formoterol. Smoked cannabis may also irritate the airways.
How serious is the interaction between Formoterol and Marijuana?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Counsel patients with cardiac disease to be aware of palpitations, and monitor heart rate if both are used.
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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