Why it matters
CBD is metabolised mainly by CYP3A4 to 7-OH-CBD (active) and 6-OH-CBD (less active), and by CYP2C19 to 6-OH-CBD. CBD itself is also a potent inhibitor of CYP3A4 and CYP2C19, which is the basis for most CBD drug interactions.
In practice
Practical relevance: any medication metabolised by CYP3A4 or CYP2C19 — warfarin, certain anti-seizure drugs, benzodiazepines, statins, some antidepressants — can have its plasma levels altered by concurrent CBD use. The interaction risk is real at clinical-trial doses; at consumer doses it is meaningful for sensitive substrates.
Common confusion
“CBD is safe to combine with anything” is wrong. The interaction profile is well-documented and worth checking before stacking.
This glossary entry is editorial content reviewed against primary sources. It is not medical advice. See our Editorial Policy.