Supplements: Caffeine + Creatine Stack
Vandenberghe 1996 (n=9) suggested caffeine impaired creatine's torque gains, but Hespel et al. 2002 found no interaction, and multiple subsequent studies confirm no meaningful interference at typical doses.
| Measure | Value | Unit | Notes |
|---|---|---|---|
| Evidence Tier | 1 | tier | Tier 1 — Strong: the myth is well-refuted; multiple studies confirm no interaction at typical doses |
| Origin Study Sample Size | 9 | subjects | Vandenberghe 1996 — the entire myth traces to 9 subjects in a single lab |
| Caffeine Dose (typical) | 3 | mg/kg | Standard ergogenic dose; ~200–240mg for 70–80kg athlete |
| Creatine Dose (maintenance) | 3–5 | g/day | Daily maintenance dose; no loading protocol required for performance benefits |
| Replication Finding | No interaction | Hespel 2002 and multiple follow-up studies found no meaningful interference between caffeine and creatine | |
| GI Risk (concurrent use) | Low–Moderate | Very high caffeine (>6mg/kg) + creatine loading phase may cause GI distress — separate timing |
Few supplement myths have persisted as stubbornly as the claim that caffeine cancels out creatine. This page traces that claim to its source, examines the replication record, and provides a clear verdict.
The Origin of the Myth
The claim traces entirely to Vandenberghe et al. 1996 (PMID 8828669), a study from the University of Leuven with 9 subjects. The researchers found that while creatine alone improved maximal isokinetic torque, co-supplementing with caffeine eliminated this benefit. The proposed mechanism was that caffeine altered calcium handling in muscle, opposing creatine’s effects on muscle relaxation dynamics.
Nine subjects. One lab. One specific measurement (isokinetic torque). This became the foundation for a widely repeated nutrition myth.
The Evidence Record
| Study | Year | N | Protocol | Caffeine Dose | Creatine Dose | Finding | Verdict |
|---|---|---|---|---|---|---|---|
| Vandenberghe et al. | 1996 | 9 | 5-day loading + caffeine | ~5 mg/kg | 20g/day loading | Caffeine impaired creatine torque gains | Myth origin |
| Hespel et al. | 2002 | 20 | 5-day loading + caffeine | 6 mg/kg | 20g/day loading | No interaction in performance | Refutes myth |
| Trexler & Smith-Ryan | 2015 | Review | Systematic review | Various | Various | No meaningful interaction at typical doses | Confirms no interaction |
| Doherty et al. | 2002 | 18 | Creatine + caffeine vs creatine | 5 mg/kg | 5g/day | No impairment of creatine benefits | Confirms no interaction |
| Spradley et al. | 2012 | 13 | Combined pre-workout | Mixed | 3g | No attenuation of creatine effect | Confirms no interaction |
| Vandenberghe | 1996 | 9 | Original protocol | ~5 mg/kg | 20g/day | Impairment found | Isolated finding, not replicated |
Bold conclusion: No meaningful interaction at typical doses. Stack freely.
Why the Original Study May Have Found an Effect
The Vandenberghe study used a high caffeine dose (~5 mg/kg), measured a specific neuromuscular endpoint (muscle relaxation time), and used a very small sample. The specific mechanism proposed — caffeine opposing creatine-induced changes in sarcoplasmic reticulum calcium release — was directly tested by Hespel et al. 2002 and not confirmed. The finding appears to have been a false positive due to low statistical power.
Practical Stacking Protocol
- Creatine: 3–5g/day, any time, every day — timing is irrelevant because creatine works via muscle saturation over weeks, not acute absorption
- Caffeine: 3–6 mg/kg body weight, 45–60 minutes pre-workout
- Caution: Very high caffeine (>6 mg/kg) combined with creatine loading (20g/day) during the loading phase may cause compounded GI distress — consider separating timing during loading if sensitive
Both supplements are independently Tier 1 ergogenic aids. Nothing in the evidence suggests you should avoid stacking them.
Related Pages
Sources
- Vandenberghe K et al. Caffeine counteracts the ergogenic action of muscle creatine loading. J Appl Physiol. 1996;80(2):452-457.
- Hespel P et al. Opposite actions of caffeine and creatine on muscle relaxation time in humans. J Appl Physiol. 2002;92(2):513-518.
- Trexler ET, Smith-Ryan AE. Creatine and caffeine: considerations for concurrent supplementation. Int J Sport Nutr Exerc Metab. 2015;25(6):607-623.
Frequently Asked Questions
Does caffeine cancel out creatine?
No. This claim originated from a single 1996 study with only 9 subjects. Subsequent research including a 2002 direct replication (PMID 11882927) found no meaningful interaction between caffeine and creatine at typical doses. You can stack them freely.
Can I take creatine and pre-workout together?
Yes. Creatine can be taken at any time of day — it works via chronic saturation of muscle stores, not acute timing. Most pre-workouts contain caffeine, and this combination is well-supported. Mix creatine into your pre-workout or take it separately; both approaches work.
What is the optimal way to stack caffeine and creatine?
Take creatine daily at 3–5g regardless of training day (timing is flexible — morning, pre- or post-workout). Take caffeine 45–60 minutes before training at 3–6 mg/kg body weight. There is no need to separate them, though very high caffeine doses (>6 mg/kg) combined with a creatine loading phase may increase GI discomfort.
Where did the myth that caffeine cancels creatine come from?
From Vandenberghe et al. 1996, which showed that co-supplementing caffeine reduced creatine's improvement in isokinetic torque in 9 subjects. The specific measure was muscle relaxation time, and the proposed mechanism was that caffeine antagonized creatine's effect on calcium handling in muscle. Hespel et al. 2002 tested this directly and found the opposite result — no impairment of creatine's benefits.