Combination

Mixing Methadone and Opioids

OpioidOpioid
Methadone also called
dolophine, methadose, done
Opioids also called
opiate, opiates, opioid, heroin, dope, smack
Verdict

Dangerous

Using heroin or oxycodone on top of methadone is dosing into an opioid load that is still there whether or not you feel it. Because methadone blunts the effect people are chasing, the usual response is to take more of the full agonist, which is precisely the wrong direction.

Risk / Physical

The risk here is to the body — breathing, heart, temperature or organs. Set limits before you start, because this kind of harm does not announce itself in time to react.

Can you mix Methadone and Opioids?

High risk of death or life-changing injury. Do not combine.

Methadone
Long-acting — outlasts its own effects by many hours
Opioids
Full agonists — heroin, oxycodone, morphine
Source

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 dangerous. Educational information only, not medical advice. Absence of a documented interaction is not evidence of safety.