Creatine Before or After a Workout? What 5 Head-to-Head Studies Found

Should you take creatine before or after a workout? It barely matters. Every study that compared the two found similar gains in muscle and strength. If you want to pick a side, the small amount of evidence that leans one way favours just after training: in a 32-week study in older adults, only the group taking creatine after workouts gained significantly more lean mass than placebo. What matters far more is taking 3–5 g every day, including rest days.

The short version

• Before vs after: five direct comparisons, from 4 to 32 weeks, found no meaningful difference between the two.
• Slight lean to after: one longer study and one statistical analysis hinted at a small advantage for post-workout creatine. It is a lean, not a rule.
• Close to training may beat far from it: one study found more muscle creatine when a creatine-containing shake was taken right around training rather than hours away, though it was a multi-ingredient shake.
• What really counts: taking it daily. Muscle creatine builds up over weeks, so consistency beats timing.

How this article was done

I have not taken creatine for this article. I read the studies that directly compared creatine before and after resistance training and a 2022 review of them by nine creatine researchers. This is general information, not medical advice, and it follows my methodology.

Why timing should not matter much

Creatine does not work like caffeine, with an effect a few minutes after you take it. It works by slowly raising the amount of creatine stored in your muscles. At 3–5 g a day those stores fill over about four weeks and then stay high as long as you keep taking it. Once the tank is full, whether today’s scoop came an hour before or after training makes little difference to what is already stored.

What the studies found

Young bodybuilders, 4 weeks

In 2013, 19 recreational male bodybuilders took 5 g of creatine either immediately before or immediately after each workout for four weeks. Standard statistics found no significant difference between the groups. The authors also used a “magnitude-based” analysis that suggested post-workout creatine was likely a little better for fat-free mass and bench-press strength, which is where the “take it after” advice comes from. That analysis method is debated, and the study was small and short.

Older adults, 12 weeks and 32 weeks

In a 12-week study, healthy adults aged 50–64 took about 0.1 g per kg of body weight (roughly 8 g) before or after training; gains in lean mass, muscle thickness and strength were similar. In a longer, 32-week study in adults aged 50–70 that also had a placebo group, creatine taken either before or after training improved strength more than placebo, and the two creatine groups did not differ from each other. But only the group taking creatine after training gained significantly more lean mass than placebo. The 2022 review calls this the only line of evidence suggesting a slight advantage for post-workout creatine.

Young adults, 8 and 16 weeks

An 8-week study had participants take creatine before training one side of the body and after training the other side; both sides gained muscle and strength equally. A 2026 study in trained young men and women, 16 weeks long and with a placebo group, found creatine before and after training produced comparable changes in body composition, muscle thickness and performance.

Close to training vs hours away

One study gave male bodybuilders a shake containing creatine, whey protein and glucose either right before and after training or in the morning and before bed. The group taking it around training built up more muscle creatine and gained more muscle and strength. But because the shake contained several ingredients and there was no placebo group, it cannot tell us whether creatine timing itself was the cause.

What the experts conclude

The 2022 review by nine creatine researchers, titled “Creatine O’Clock”, concluded that taking creatine before or after training produces similar muscle benefits in young and older adults, and that the current research does not support prescribing a specific time. They noted that nobody has yet compared every option (hours before, just before, during, just after, hours after) in one study.

So when should you take it?

• Take it every day, including rest days, at whatever time you will not forget.
• On training days, just after your workout is a reasonable default if you want to follow the small lean in the evidence. Mixing it into a post-workout shake or meal makes it easy.
• Dose: 3–5 g a day of creatine monohydrate. A loading phase (about 20 g a day for 5–7 days) fills muscles faster but adds more water weight early; see does creatine make you gain weight.
• With food is fine, and may be easier on the stomach.

Worried about side effects? The evidence on the most common fear is in does creatine cause hair loss.

Choosing a product? The best creatine powders compares six on purity, verified testing and price per 5 g.

For every reported side effect and what the trials show, see creatine side effects: what is real and what is a myth.

Wondering when you will see results? How long creatine takes to work gives the week-by-week timeline.

Common questions

Is it better to take creatine before or after a workout?

Studies found similar results either way. If you want to choose, the slight lean in the evidence favours just after training.

Should I take creatine on rest days?

Yes. Creatine works by keeping muscle stores full, which needs a daily dose, not only on training days.

Can I take creatine in the morning?

Yes. A study in female athletes found similar results whether creatine was taken after morning or evening training. Consistency matters more than the hour.

Can I mix creatine with protein or pre-workout?

Yes. Mixing it with a protein shake or meal is a convenient way to take it. Check that a pre-workout does not already contain creatine, so you do not double the dose.

How long does creatine take to work?

Muscle stores fill in about a week with a loading phase, or about four weeks at 3–5 g a day, after which strength and muscle benefits build with training.

Sources

• Candow DG et al. Creatine O’Clock: Does Timing of Ingestion Really Influence Muscle Mass and Performance? Frontiers in Sports and Active Living. 2022
• Antonio J, Ciccone V. The effects of pre versus post workout supplementation of creatine monohydrate on body composition and strength. Journal of the International Society of Sports Nutrition. 2013
• Candow DG et al. Strategic creatine supplementation and resistance training in healthy older adults. Applied Physiology, Nutrition, and Metabolism. 2015
• Mills SD et al. Comparison of creatine monohydrate supplementation immediately before versus immediately after resistance training sessions in trained young healthy adults. Nutraceuticals. 2026
• Antonio J et al. Common questions and misconceptions about creatine supplementation. Journal of the International Society of Sports Nutrition. 2021 — loading and daily dosing.