Drug interactions
Armodafinil + Marijuana
Severity: Minor
Armodafinil 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 commonly causes sedation, impaired cognition and tachycardia, while armodafinil is a stimulant that promotes wakefulness. Their effects partly oppose each other, but both can affect heart rate and anxiety, and impairment may be underestimated.
What this interaction means in plain words
Armodafinil 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
Opposing and overlapping central nervous system pharmacodynamic effects; no established pharmacokinetic mechanism.
What to do
Advise the patient that armodafinil does not reverse cannabis impairment and that driving should be avoided. Monitor heart rate and anxiety symptoms.
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 Armodafinil
Frequently asked questions
Can I take Armodafinil with Marijuana?
MediHelp rates the interaction as minor. Armodafinil 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 commonly causes sedation, impaired cognition and tachycardia, while armodafinil is a stimulant that promotes wakefulness. Their effects partly oppose each other, but both can affect heart rate and anxiety, and impairment may be underestimated.
How serious is the interaction between Armodafinil 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: Advise the patient that armodafinil does not reverse cannabis impairment and that driving should be avoided. Monitor heart rate and anxiety symptoms.
What other medicines interact with Armodafinil?
MediHelp also lists interactions of Armodafinil with, for example, Avapritinib, Elacestrant, Elbasvir / grazoprevir. The full list is on the Armodafinil page.
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