Head-to-head evidence comparison — which supplement is right for you?
Creatine wins 1 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Compound
Amino Acid
100-200mg
Morning, 30-60 minutes before exercise
Pill/capsule for precise dosing
5g daily
Any time, Post-workout may have slight advantage
Monohydrate powder
15-45 minutes
30-60 minutes
30-60 minutes
30-60 minutes
2-4 weeks
1-2 weeks
First week
2-4 weeks
Effect of Acute Caffeine Intake on the Fat Oxidation Rate during Exercise: A Systematic Review and Meta-Analysis
Nutrients (2020) · Meta analysis · n=2020
A subsequent meta-analysis was performed using the random effects model to calculate the standardized mean difference (SMD).
The effects of caffeine intake on weight loss: a systematic review and dos-response meta-analysis of randomized controlled trials
Critical reviews in food science and nutrition (2019) · Meta analysis · n=606
Thirteen RCTs with 606 participants were included in the meta-analyses.
Early versus Late Caffeine Therapy Administration in Preterm Neonates: An Updated Systematic Review and Meta-Analysis
Neonatology (2024) · Meta analysis · n=122579
A total of 122,579 patients from 11 studies were included, 2 were randomized controlled trials (RCTs), and 63.9% of the neonates received early caffeine administration.
Risk of Adverse Outcomes in Females Taking Oral Creatine Monohydrate: A Systematic Review and Meta-Analysis
Nutrients (2020) · Meta analysis · n=951
Six hundred and fifty-six studies were identified where creatine supplementation was the primary intervention; fifty-eight were female only studies (9%).
International Society of Sports Nutrition position stand: creatine supplementation and exercise
Journal of the International Society of Sports Nutrition (2017) · Systematic review
Increases strength by 5-15%
Effects of Creatine Supplementation and Resistance Training on Muscle Strength Gains in Adults <50 Years of Age: A Systematic Review and Meta-Analysis
Nutrients (2024) · Meta analysis · n=20
In comparison with a placebo, creatine supplementation combined with resistance training significantly increased upper-body (WMD = 4.43 kg, p < 0.001) and lower-body strength (WMD = 11.35 kg, p < 0.001).
Creatine has a higher evidence score (9.5/10 vs 9.5/10) and wins in 1 of 3 categories.
For boost daily energy, Caffeine has a higher relevance score (98 vs 75).
No known interactions between Caffeine and Creatine have been documented in our database. However, always consult a healthcare provider before combining supplements.