Drug interactions
Caffeine + Dextroamphetamine
Severity: Minor
Caffeine and Dextroamphetamine: minor interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Caffeine and dextroamphetamine are both central stimulants, so the combination can produce additive nervousness, insomnia, tremor, palpitations and increased blood pressure. The effect is dose-related and typically mild with ordinary caffeine intake.
What this interaction means in plain words
Caffeine and Dextroamphetamine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Caffeine belongs to Miscellaneous; Dextroamphetamine belongs to Central Nervous System.
Why it happens
Additive central nervous system stimulation and sympathomimetic effects.
What to do
Advise patients to limit caffeine intake from coffee, energy drinks and supplements. Reduce caffeine if palpitations, anxiety or insomnia occur.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Dextroamphetamine
- Dextroamphetamine + Isocarboxazid Contraindicated
- Dextroamphetamine + Linezolid Contraindicated
- Dextroamphetamine + Methylene blue Contraindicated
- Dextroamphetamine + Phenelzine Contraindicated
- Dextroamphetamine + Rasagiline Contraindicated
- Dextroamphetamine + Safinamide Contraindicated
Other interactions of Caffeine
- Caffeine + Ephedrine Major
- Caffeine + Fezolinetant Major
- Caffeine + Methylenedioxymethamphetamine Major
- Caffeine + Selegiline transdermal Major
- Adenosine + Caffeine Moderate
- Benzphetamine + Caffeine Moderate
Frequently asked questions
Can I take Caffeine with Dextroamphetamine?
MediHelp rates the interaction as minor. Caffeine and Dextroamphetamine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Caffeine and dextroamphetamine are both central stimulants, so the combination can produce additive nervousness, insomnia, tremor, palpitations and increased blood pressure. The effect is dose-related and typically mild with ordinary caffeine intake.
How serious is the interaction between Caffeine and Dextroamphetamine?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Advise patients to limit caffeine intake from coffee, energy drinks and supplements. Reduce caffeine if palpitations, anxiety or insomnia occur.
What other medicines interact with Dextroamphetamine?
MediHelp also lists interactions of Dextroamphetamine with, for example, Isocarboxazid, Linezolid, Methylene blue. The full list is on the Dextroamphetamine page.
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