The best outcomes happen when cannabis is part of a conversation with your clinician — not a secret from them. Build a question sheet for your situation, then print it and bring it along.
Tap whatever applies. We'll assemble a tailored list of questions worth asking — and gently flag the things that deserve extra attention.
What are you hoping it helps with?
Do any of these apply to you?
Here's the mechanism worth understanding: just like grapefruit, CBD and THC tie up the liver enzymes (the CYP family) that clear many other drugs. That can let those drugs build up higher than intended. This is the single most important thing to review with a pharmacist.
Cannabinoids can raise warfarin levels and bleeding risk. If you take it, your clinician may want to check your INR after starting.
Benzodiazepines, sleep aids, opioids and alcohol stack with THC's drowsiness and impairment. The combination hits harder than either alone.
Some antidepressants, anti-seizure drugs, heart medicines and immunosuppressants are processed by the same enzymes — CBD in particular can nudge their levels up.
High-dose CBD is well documented to raise levels of some seizure medications, sometimes requiring a dose adjustment.
Cannabis is generally well-tolerated, but a few situations carry real, evidence-based risk. None of these are judgments — they're reasons to involve a clinician first.
THC crosses the placenta and enters breast milk. Major medical bodies advise avoiding cannabis while pregnant or nursing.
High-THC cannabis can trigger or worsen psychosis, especially with a personal or family history. CBD-dominant products carry less of this risk.
The brain matures into the mid-20s. Regular heavy THC use during this window is associated with cognitive and mental-health effects.
THC briefly raises heart rate and blood pressure. With unstable heart disease, that's worth discussing before you start.
The liver processes cannabinoids. Significant liver disease can change how you handle a dose — start lower and monitor.
THC impairs reaction time and coordination. Don't drive while impaired — effects can outlast the "high," especially with edibles.