Can You Take Caffeine With Creatine?

Yes, for most people you can take caffeine with creatine. Studies that test a single dose of caffeine before training in people who already take creatine generally find the two work side by side. The worry comes from a 1996 study, and a few later ones, where heavy daily caffeine during a creatine loading phase seemed to cancel creatine’s benefit. The fix is about timing and dose, not giving up your coffee.

This guide is about the combination itself. If you want the basics of caffeine before lifting, start with caffeine for weightlifting.

Key takeaways

• A 2022 systematic review of 10 studies found that prior creatine loading did not blunt the benefit of a single pre-exercise caffeine dose.
• Results for daily caffeine during creatine loading are mixed: some studies found interference, others none.
• Stomach upset is the most practical side effect of taking both together.
• A simple rule: take creatine daily at any time, and use caffeine strategically before hard sessions.

In this article

1. What the studies show
2. Why caffeine might interfere
3. How to take caffeine with creatine
4. Dose table by body weight
5. FAQ

Caffeine with creatine: what the studies show

The 1996 study that started the debate

In 1996, Belgian researchers led by Karin Vandenberghe published a small study in the Journal of Applied Physiology. Volunteers loaded creatine for six days, with or without a high daily dose of caffeine (about 5 mg per kg of body weight). Creatine alone improved repeated muscle force; when caffeine was added every day, that improvement disappeared. The headline “caffeine cancels creatine” has followed gym-goers ever since.

Two details matter. The caffeine was taken every day of loading, and the dose was high: roughly 375 mg a day for a 75 kg person. That is not the same as one cup of coffee before training.

The newer picture

A 2015 review by Eric Trexler and Abbie Smith-Ryan in the International Journal of Sport Nutrition and Exercise Metabolism concluded the interaction was plausible but poorly understood. A 2022 systematic review in the same journal (Elósegui and colleagues) pooled 10 studies and found:

• Acute caffeine taken before exercise kept its benefit after creatine loading (three studies).
• For chronic combined use, two studies found caffeine reduced creatine’s effect, three found no interaction and one found a synergy.
• Gastrointestinal discomfort when the two were taken together was a recurring issue and a possible reason for poorer results.

Why caffeine might interfere

Nobody has proven the mechanism. The ideas researchers discuss include:

• Muscle relaxation time. Creatine loading may help muscles relax faster between contractions, while caffeine may slow relaxation. Opposite effects could blunt each other in repeated-effort tests.
• Gut discomfort. Both can upset the stomach in some people, and feeling sick lowers performance.
• Fluid shifts. Creatine draws water into muscle; caffeine was once thought to dehydrate. Modern evidence shows moderate coffee does not meaningfully dehydrate habitual drinkers (see does coffee dehydrate you?), so this idea has lost ground.

How to take caffeine with creatine

1. Skip or soften the loading phase. Creatine at 3–5 g a day saturates muscles in about three to four weeks without loading, according to the International Society of Sports Nutrition (ISSN). This sidesteps most of the conflicting data.
2. If you load, separate them. Take creatine with meals and keep caffeine to your usual morning cup rather than large extra doses.
3. Use caffeine acutely. Take it about 60 minutes before a hard session, the timing most studies in the ISSN caffeine position stand used.
4. Take creatine with food. It is not timing-sensitive, and a meal reduces stomach upset.
5. Watch total caffeine. Pre-workout powders often contain 150–300 mg per scoop. Add your coffee to that number.

A sample day

• 7:00 breakfast with one mug of coffee
• 12:30 lunch with 5 g creatine
• 17:00 one espresso or small coffee
• 17:45 training

Caffeine and creatine dose table by body weight

The ISSN caffeine position stand (2021) describes performance benefits from about 3–6 mg of caffeine per kg of body weight. Starting at the low end is wise, and for most healthy adults the FDA and EFSA put a safe daily total at up to 400 mg, with single doses up to about 200 mg (EFSA). For creatine, ISSN describes loading at about 0.3 g/kg/day for 5–7 days or a simple 3–5 g daily dose.

*Above the 400 mg daily reference for most adults. Stay with the lower dose unless a sports dietitian advises otherwise.

How much is that in coffee? An 8 oz (240 ml) brewed cup holds roughly 80–100 mg, according to the FDA, and a single espresso about 60–75 mg depending on the beans. Our caffeine in coffee guide breaks it down by brew method.

Coffee for your training days

Coffee lets you control your dose by cup size, and you get a drink you actually enjoy. For a bigger kick before heavy days, Max Caf Blend pairs Tanzanian coffee with Indian Robusta. If you want the ritual with less caffeine on loading days, Half Caf mixes regular coffee and water-process decaf, and Decaf Espresso works for late sessions. Browse the full range in Best Selling.

Caffeine with creatine FAQ

Can I mix creatine into my coffee?

Yes. Creatine monohydrate dissolves better in warm liquid. Just count the coffee toward your daily caffeine total and stir well.

Does coffee cancel creatine?

Not in the way the myth suggests. One cup a day has not been shown to cancel creatine; the concern applies mainly to high daily caffeine doses during loading.

Should I stop caffeine during a creatine loading phase?

You don’t have to. Keeping caffeine moderate, or skipping loading in favor of 3–5 g a day, avoids the scenario linked to interference.

Is it safe to take caffeine with creatine?

For healthy adults at normal doses, no specific safety problem has been shown. If you have heart, kidney or blood pressure concerns, ask your doctor first.

Sources

1. Elósegui S, López-Seoane J, Martínez-Ferrán M, Pareja-Galeano H. Interaction Between Caffeine and Creatine When Used as Concurrent Ergogenic Supplements: A Systematic Review. International Journal of Sport Nutrition and Exercise Metabolism, 2022. Universidad Europea repository.
2. Trexler ET, Smith-Ryan AE. Creatine and Caffeine: Considerations for Concurrent Supplementation. International Journal of Sport Nutrition and Exercise Metabolism, 2015. Summary.
3. Vandenberghe K et al. Caffeine counteracts the ergogenic action of muscle creatine loading. Journal of Applied Physiology, 1996. DOI.
4. Kreider RB et al. ISSN position stand: safety and efficacy of creatine supplementation. Journal of the International Society of Sports Nutrition, 2017. JISSN.
5. Guest NS et al. ISSN position stand: caffeine and exercise performance. Journal of the International Society of Sports Nutrition, 2021. JISSN.
6. U.S. Food and Drug Administration. Spilling the Beans: How Much Caffeine Is Too Much? fda.gov.

Facts checked in October 2026.

This article is for general information only and is not medical advice. If you have a health condition, are pregnant or take medication, ask your doctor before changing your caffeine intake.

Keep reading: Coffee vs pre-workout · Coffee before a workout · Blends