Combination

Mixing Caffeine and Methamphetamine

StimulantStimulant
Caffeine also called
coffee, energy drink, espresso, pre-workout
Methamphetamine also called
meth, crystal, crystal meth, ice, tina, shard
Verdict

Caution

This combination of stimulants is not generally necessary and may increase strain on the heart, as well as potentially causing anxiety and greater physical discomfort.

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 Caffeine and Methamphetamine?

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

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

Methamphetamine
Roughly twice as potent, and lasts three to four times as long
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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Related combinations

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