Taking creatine supplements leads to higher levels of creatine in muscles, improves the ability to regenerate energy during intense workouts, and over 8 to 12 weeks, allows for more total training and measurable muscle growth.
Evidence from Studies
Supporting (4)
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This study found that taking creatine before or after workouts helped people build more muscle and get stronger over 8 weeks, just like the claim says. It doesn't matter when you take it—creatine still works.
This study found that young female wrestlers who took creatine while training got stronger and built more muscle than those who didn’t take it. So yes, creatine helps you train harder and grow muscles.
No effect of creatine supplementation on human myofibrillar and sarcoplasmic protein synthesis after resistance exercise.
This study found that taking creatine does increase the amount of creatine in muscles, which helps with energy during workouts, but it didn't show that creatine makes muscles grow bigger right after a single workout. Other longer studies show it does help muscles grow over time.
Nutritional Supplements for Muscle Hypertrophy: Mechanisms and Morphology—Focused Evidence
This study found that taking creatine for 8–12 weeks helps people lift heavier or do more reps, which leads to bigger muscles over time. It’s like giving your muscles extra fuel to work harder and grow.
Contradicting (1)
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In this study, men with prostate cancer taking special hormones didn’t get extra muscle or strength from taking creatine, even though they lifted weights. This means creatine didn’t help them like it often helps healthy people.
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.