Combination

Mixing Cannabis and Methadone

DepressantOpioid
Cannabis also called
weed, pot, marijuana, thc, hash, edibles
Methadone also called
dolophine, methadose, done
Verdict

Low risk, increased effect

Low risk of harm, but the effects amplify each other. Doses that are fine alone can be far too much together.

Can you mix Cannabis and Methadone?

Low risk of harm, but the effects amplify each other. Doses that are fine alone can be far too much together.

This is a class-level answer, inherited from Opioids. Nothing specific to this exact pair is documented, so treat it as the default for the class rather than a measurement of these two drugs together.

Methadone
Long-acting — outlasts its own effects by many hours
Source

TripSit drug combination chart, retrieved 2026-08-20. View the dataset.

Checking more than two?

Combinations of three or more carry risks that no pair-by-pair chart can show. The checker rates every pair at once and flags the whole-mix ones on top.

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Rated low / synergy. Educational information only, not medical advice. Absence of a documented interaction is not evidence of safety.