Creatine and sleep: is there a link?

Creatine is best known for its effects on strength and muscle gain. But a question is being asked more and more often, including by people who don't play sports: does creatine affect sleep?

The question deserves to be asked in two parts. On the one hand, several studies have looked at creatine's ability to help the brain better tolerate a temporary lack of sleep (all-nighter, jet lag, night shift). On the other hand, more recent research has sought to determine whether regular supplementation could alter the quality or duration of daily sleep.

These are two different questions, with different levels of evidence.

To answer them, we need to understand creatine's role in the brain's energy function, and then look at what clinical trials published in recent years actually show.

Why look for a link between creatine and sleep?

Creatine is not only stored in muscles.

A part of it is also found in the brain, where it participates in the phosphocreatine/ATP system, a quickly mobilizable energy reserve for cells that consume a lot of it, such as neurons.

Sleep plays a role in restoring these cerebral energy reserves. When sleep is lacking, the brain must continue to function with reserves that have not been replenished normally — a mechanism already mentioned in our article on sleep and recovery.

The hypothesis studied by researchers is simple: if creatine increases the availability of this cerebral energy fuel, it could help the brain better tolerate a sleep deficit, and perhaps influence certain sleep parameters itself.

This mechanism also joins the avenues explored around creatine and chronic fatigue, where the same energy logic is at play.

 

Creatine and sleep deprivation: what do studies show?

It is in this area that the data is strongest.

The 2024 pioneering study

Gordji-Nejad and colleagues tested a single dose of creatine (0.35 g/kg, or about 25 g for a 70 kg person) in 15 volunteers subjected to 21 hours of total sleep deprivation.

Using magnetic resonance imaging, the researchers observed changes in cerebral phosphocreatine and ATP levels consistent with improved energy availability for neurons.

• Better working memory and information processing speed compared to placebo;
• lower subjective fatigue;
• measurable effects from 3.5 hours after intake, peaking around the 4th hour;
• effects maintained for at least 9 hours.

A follow-up study with a lower dose

A study published in 2026 in Nutrients tested a more modest dose, 0.2 g/kg (about 14 g for 70 kg), on 29 volunteers in a similar protocol.

The results point in the same direction, with a reduction in cognitive deterioration that can reach 12% on certain tasks (logic, calculation, vigilance), although the effect is less marked than with the higher dose tested in 2024.

Women seem to benefit slightly more than men on certain tests, particularly those involving logic and processing speed.

Regarding acute sleep deprivation, there are now two converging randomized controlled trials. This is a different use from classic daily intake for sports performance.

 

Does creatine improve daily sleep quality?

This is a separate question from the previous one, and the answers are more mixed.

A randomized, double-blind, crossover trial published in 2025 in Nutrients followed physically active men during a creatine monohydrate loading phase, with objective sleep monitoring.

• Subjective sleep quality: significant improvement, with a large effect size;
• total sleep duration: no significant difference;
• sleep efficiency: no significant difference;
• sleep onset latency: no significant difference.

In short: participants felt they slept better, without the objective data actually changing.

The authors explain that these subjects were already sleeping well to begin with, which leaves little room for measurable improvement. Objective benefits might be more visible in people whose sleep is already disturbed, or in athletes undergoing intense recovery.

 

Creatine and sleep in female athletes: an effect linked to training

A study published in 2024 in Nutrients, conducted in women practicing strength training, found a more tangible result.

On nights following a strength training session, the creatine group slept on average 45 minutes longer than the placebo group (444 minutes vs. 397 minutes).

However, no difference was observed on non-training days.

Perceived sleep quality, measured by questionnaire, did not differ between groups.

The effect therefore seems linked to the combination of creatine + training, rather than creatine alone.

 

Creatine intake and sleep disorders in the general population

An analysis of data from the American NHANES survey, involving over 5,900 adults, looked at dietary creatine intake and sleep disorders.

An intake below the recommended threshold (approximately 1 g per day) was associated with a higher prevalence of mild sleep disorders (23.7% vs. 19.3%), with a relative risk of approximately 1.3.

However, more severe sleep disorders did not differ significantly between groups.

This type of observational study does not allow us to conclude a cause-and-effect relationship, but it is consistent with the results of the controlled trials presented above.

 

A critical look is needed

It would be incomplete to present only the positive results.

A systematic review published in 2024 in Behavioural Brain Research examined the entire literature on creatine and cognition. Its conclusion is cautious: the evidence remains generally weak and heterogeneous, with often small sample sizes, highly variable protocols, and effects that are not consistently reproduced from one study to another.

This finding does not contradict studies on acute sleep deprivation, which remain among the most reproducible results in the field.

But it calls for nuance on the idea of creatine as a "natural sleeping pill" or a universal tool for sleep optimization. Current data do not allow us to go that far.

 

How to use creatine for this purpose?

To limit the effects of temporary sleep deprivation

The studied protocols use a single, relatively high dose (0.2 to 0.35 g/kg, or about 14 to 25 g for a 70 kg person), taken before a period when sleep will be reduced or absent.

This is a punctual use, distinct from classic daily supplementation. There is not yet enough hindsight on the frequent repetition of such high doses.

For classic daily use

The usual dose of 3 to 5 g per day of creatine monohydrate, used continuously, remains the reference for strength and body composition goals. This dosage can also be suitable outside of a sporting context, as discussed in our article on creatine without sport.

Current data suggest that it could also, in some people and particularly after intense training, promote slightly longer sleep duration on subsequent nights. This effect should be considered a possible bonus, rather than a primary goal.

 

Can creatine disturb sleep?

None of the studies presented in this article report any negative effect of creatine on sleep.

Some users report an increased feeling of energy during the day, but nothing in the current literature indicates a link with sleep onset disorders. Other nutrients, such as magnesium, are more associated with relaxation and sleep onset, and can be considered as a supplement.

As with any new supplementation, it is recommended to seek medical advice in case of a particular pathology, pregnancy, breastfeeding, or ongoing medication.

 

What to remember

• Creatine and sleep are linked by a cerebral energy mechanism, the phosphocreatine/ATP system.
• Regarding acute sleep deprivation, two randomized controlled trials show that a single, high dose of creatine can limit the deterioration of cognitive performance.
• Regarding daily sleep, objective effects (duration, efficiency, sleep onset latency) remain limited in people who already sleep well.
• In female athletes, creatine was associated with longer sleep duration on nights following training, but not on other nights.
• Population data suggest that sufficient dietary creatine intake may be associated with fewer mild sleep disorders, without proof of causality.
• A systematic review reminds us that the overall level of evidence on creatine and cognition remains weak and heterogeneous.
• No study reports any negative effect of creatine on sleep.

The link between creatine and sleep is real, but it cannot be summarized in a simple formula. Creatine does not replace a night's sleep: it seems to primarily help the brain function better when that night was missed, and could, in certain training contexts, promote slightly longer nighttime recovery.

 

Scientific Sources

• Gordji-Nejad A, Matusch A, Kleedörfer S, Patel HJ, Drzezga A, Elmenhorst D, Binkofski F, Bauer A. Single dose creatine improves cognitive performance and induces changes in cerebral high energy phosphates during sleep deprivation. Scientific Reports. 2024;14:4937.
• Gordji-Nejad A, Matusch A, Hengstler L, Beer S, Kroll T, Klein S, Elmenhorst D, Bauer A, Drzezga A. Single-Dose Creatine Reduces Sleep Deprivation-Induced Deterioration in Cognitive Performance. Nutrients. 2026;18(8):1192.
• Ben Maaoui K, Delleli S, Mahdi N, Jebabli A, Del Coso J, Chtourou H, Ardigò LP, Ouergui I. Effects of Creatine Monohydrate Loading on Sleep Metrics, Physical Performance, Cognitive Function, and Recovery in Physically Active Men: A Randomized, Double-Blind, Placebo-Controlled, Crossover Trial. Nutrients. 2025;17(24):3831.
• Aguiar Bonfim Cruz AJ, Brooks SJ, Kleinkopf K, Brush CJ, Irwin GL, Schwartz MG, Candow DG, Brown AF. Creatine Improves Total Sleep Duration Following Resistance Training Days versus Non-Resistance Training Days among Naturally Menstruating Females. Nutrients. 2024;16(16):2772.
• Baltic S, Grasaas E, Ostojic SM. Creatine and sleep habits and disorders in the general population aged 16 years and over: NHANES 2007–2008. Nutrition and Health. 2025;31(2):369-376.
• Creatine supplementation research fails to support the theoretical basis for an effect on cognition: Evidence from a systematic review. Behavioural Brain Research. 2024.