Why it matters
High-risk co-administration categories include anti-seizure medications (clobazam, valproate), blood thinners (warfarin), benzodiazepines, statins, certain antidepressants, immunosuppressants (tacrolimus), and chemotherapy agents metabolised by the same enzymes. The interaction generally raises plasma concentrations of the affected drug, sometimes substantially.
In practice
Practical guidance: anyone on chronic prescription medication should consult a pharmacist before starting CBD, particularly at doses above 25mg daily. Lower doses carry lower interaction risk but are not interaction-free.
Common confusion
“CBD is natural so it cannot interact with prescriptions” is wrong and dangerous.
This glossary entry is editorial content reviewed against primary sources. It is not medical advice. See our Editorial Policy.