Combination

Mixing Amphetamines and GHB / GBL

StimulantDepressant
Amphetamines also called
adderall, speed, amphetamine, dexedrine, vyvanse, lisdexamfetamine
GHB / GBL also called
ghb, gbl, liquid ecstasy
Verdict

Caution

Stimulants increase respiration rate allowing for a higher dose of sedatives than normal. If the stimulant wears off first the opiate may overcome the individual and cause respiratory arrest.

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 Amphetamines and GHB / GBL?

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

Amphetamines
Prescription and street speed — Adderall, dexamphetamine
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 caution. Educational information only, not medical advice. Absence of a documented interaction is not evidence of safety.