Can You Take Caffeine and Creatine Together?
Research on combining caffeine and creatine shows mixed results -- caffeine may blunt creatine's benefits with regular, but not one-time, use.
See the full Caffeine page and Creatine page for other reviewed interactions and reference information.
What the interaction means
A 2022 systematic review of 10 studies found that creatine loading before a single dose of caffeine did not interfere with caffeine's usual performance benefit. However, when both were taken regularly together over time, findings were mixed: some studies found caffeine interfered with creatine's benefit, some found no interaction, and one found the combination worked better together than creatine alone. The reviewers concluded: "CRE loading does not seem to interfere in the acute effect of CAF. However, chronic SUP of CAF during CRE loading could interfere in the beneficial effect of CRE."
Why it may happen
The review notes possible mechanisms include opposite effects on muscle relaxation time and caffeine-related gastrointestinal distress during concurrent supplementation, without confirming either as the definitive cause.
Practical context
This is about exercise-performance effectiveness, not a safety risk -- the underlying studies did not report a safety concern with combining the two. The evidence is mixed enough that no firm recommendation can be drawn either way for regular concurrent use.
What the sources say
Last reviewed 2026-08-23
Medical information disclaimer: this information is general and educational. It does not diagnose conditions, prescribe treatment, or determine whether a combination is safe for you personally. Follow your prescription label and ask a pharmacist or clinician before starting, stopping, or combining products. Full disclaimer.
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