Informational only, not medical advice.
CBD and montelukast (Singulair), a medication used for asthma and allergies, doesn’t carry a heavily documented direct interaction through CBD’s usual CYP3A4 pathway, since montelukast relies more on a different enzyme (CYP2C9) for its primary metabolism, though CYP3A4 does play a smaller secondary role. Direct research on this specific combination is minimal, similar to other lower-profile interactions discussed on this site.
CBD and montelukast at a glance
| Factor | Detail |
|---|---|
| Primary pathway | CYP2C9, with a smaller secondary role for CYP3A4 |
| CBD’s typical mechanism | Primarily CYP3A4 inhibition; CYP2C9 relevance is less established |
| Direct research | Minimal to none specifically on this combination |
Why this combination sits in the lower-concern category
Since montelukast’s primary metabolic pathway differs from CBD’s main mechanism of action, this combination doesn’t carry the same well-established theoretical basis for concern as medications more heavily dependent on CYP3A4. This places it in a similar lower-documented-concern category as a few other medications discussed on this site, where the honest answer reflects limited research rather than a clearly established interaction.
Practical guidance
- Mention any CBD use to whoever prescribes montelukast, as general good practice even without a strongly established specific concern
- Continue montelukast exactly as prescribed for asthma or allergy management; don’t substitute CBD for this treatment
- Report any unusual symptoms while combining, given limited direct research on this specific pairing
Frequently asked questions
Can I take CBD with montelukast?
No well-documented major interaction concern exists given montelukast’s different primary metabolic pathway, though mentioning it to your prescriber remains reasonable practice given limited direct research.
Is montelukast affected by CBD the way other medications on this site are?
Less so; its primary reliance on CYP2C9 rather than CYP3A4 means the well-established mechanism behind many interactions discussed here is less directly relevant.
