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Interaction · 2026

Mixing Cannabis and LSD.

Is Cannabis + LSD safe? Quick answer below, then mechanism, concrete risks, what to do if you already mixed, and sources.

CautionCannabis + LSD

Mild interaction. Reduce both doses if combined.

Sostanze correlate

ProfileCannabisDosage, effects, testing, legal statusProfileLSDDosage, effects, testing, legal statusToolCheck any other pairInteractive multi-substance checker

Other common combos

alcohol + mdmacocaine + mdmacannabis + mdmalsd + mdmaketamine + mdmaalcohol + cocaine

FAQ.

Can I mix Cannabis and LSD?
The Cannabis + LSD combination is classified as caution in our reference data. Read the mechanism and risks section above before deciding.
Is Cannabis and LSD safe?
No combination is universally safe. This pair sits at the "Caution" level — see the risks list above for concrete adverse effects to watch for, and the harm-reduction section for what to do if you've already combined.
What happens if you take Cannabis and LSD together?
Effects depend on dose, route, individual sensitivity and what else is on board. The mechanism section above explains the pharmacological interaction; the risks section lists the most-reported adverse outcomes.
How long should I wait between Cannabis and LSD?
Generally: wait until the first substance has fully cleared (offset + after-effects done) before redosing or combining. For most pairs that's 6–24 hours; for long-acting compounds (MAOIs, SSRIs, some opioids) it can be days to weeks. Check each substance's individual profile page for exact durations.