Macrolide antibiotic
Azithromycin and cannabis (marijuana, THC)
As cannabis becomes legal or decriminalised in more jurisdictions, the practical question of combining it with prescription medication comes up regularly. Azithromycin (Azithromycin) and cannabis share several pharmacological pathways, and the combination at 250mg, 500mg, 600mg is not automatically benign even where both are legal.
How cannabis affects Azithromycin
THC and other cannabinoids are metabolised partly by hepatic CYP enzymes, including CYP3A4 — the same pathway used by many Macrolide antibiotic medications. Frequent cannabis use can shift the metabolism of Azithromycin mildly. THC also has cardiovascular effects (increased heart rate, blood pressure changes) and central nervous system effects that can stack with Azithromycin's side-effect profile.
Practical guidance
Occasional moderate cannabis use is unlikely to cause clinically meaningful problems for most adults on Azithromycin at 250mg, 500mg, 600mg. Heavy daily use, edibles with high THC content, or cannabis combined with alcohol substantially raise the risk of dizziness, hypotension, impaired judgement and amplified side effects from Azithromycin. According to the prescribing information, the full list of recreational substances should be disclosed to the prescriber.
Frequently asked questions
Can I use cannabis while taking Azithromycin? ▾
For most adults at 250mg, 500mg, 600mg, occasional moderate cannabis is tolerated, but heavy daily use is not advised because of metabolic and additive cardiovascular effects with Azithromycin. The safe practice is to mention it to the prescriber.
Does CBD interact with Azithromycin? ▾
CBD inhibits several CYP enzymes including CYP3A4, which can raise plasma levels of medications that go through that pathway. For Azithromycin specifically, this depends on whether Azithromycin uses CYP3A4. Daily high-dose CBD products warrant a pharmacist check.
Products containing Azithromycin
More on Azithromycin
- With alcoholAzithromycin and alcohol — is it safe to drink?
- With foodShould Azithromycin be taken with food?
- Side effectsAzithromycin side effects: common, rare and warning signs
- Dosage guideAzithromycin dosage guide: how much to take and when
- OnsetHow fast does Azithromycin start working?
- DurationHow long does Azithromycin last?
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.