Mixing DXM (robo) and Zolpidem (Ambien)

Caution

Each makes the other stronger, so high doses can knock you out without warning.

Do this

Take less of each than usual, and do not use alone. If someone passes out, put them on their side.

General answer for Benzodiazepines: nothing specific to these two is documented.

Where the risk isTap for why
What “Caution” means

Carries risk that is worth understanding before combining. Reduce doses and do not use alone.

How the ratings work
The longer explanation

Small doses of benzos can end a bad trip, but both substances potentiate the ataxia and sedation caused by the other and this can lead to unexpected loss of consciousness at high doses. While unconscious, vomit aspiration is a risk if not placed in the recovery position.

Sources (1)

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Other names
DXM
robo, robitussin, robotussin, syrup, dex, cough syrup
Cold medicines often add acetaminophen or an antihistamine — check the label
Zolpidem
ambien, ambien cr, stilnox, edluar, intermezzo, zolpimist
Works like a benzo, plus sleepwalking and sleep-driving with no memory of it
Also searched asrobo and Ambien, robitussin and Ambien, robo and ambien cr, robitussin and ambien cr
Add a third substance in the checker

Related combinations

DXM withWhat not to mix with DXM →
Zolpidem withWhat not to mix with Zolpidem →
All combinations →

Can you mix DXM (robo) and Zolpidem (Ambien)?

MixSafe rates mixing DXM and Zolpidem as "Caution" — carries risk that is worth understanding before combining. Reduce doses and do not use alone. No interaction specific to DXM and Zolpidem is documented; this is the default for Benzodiazepines. Source: TripSit drug combination chart, retrieved 2026-08-20. Educational information, not medical advice.

This is a class-level answer, inherited from Benzodiazepines. 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.