Short answer: the evidence is promising but small. A 2026 systematic review pooled five randomized trials of creatine monohydrate in mental disorders; four were in major depressive disorder and one in bipolar depression, with 126 people on creatine and 112 on placebo [1]. Two trials were rated low risk of bias and three had some concerns [1].
The most encouraging result came from one trial: creatine added to escitalopram outperformed an SSRI plus placebo at eight weeks (Cohen's d = 1.13) [1]. Creatine as augmentation to CBT also beat CBT plus placebo, and a pharmacotherapy augmentation trial in adults also appeared positive, but other single trials found no difference from placebo, including one in female adolescents and one in bipolar depression [1]. Each of these comparisons rests on one trial, so the pooled picture is not yet solid.
What's shown so far is that creatine is tolerated across these small trials at doses of 2 to 10 g/day for 4 to 8 weeks [1]. What isn't shown is that it reliably treats depression. Trials of creatine in healthy adults have measured cognition and mood only as secondary outcomes, and their results are mixed [2][3][4]. A reasonable reading is that creatine is suggested as a possible add-on worth testing in larger, well-designed trials, not a treatment to rely on.
This is research explanation, not medical advice. If you're considering creatine alongside depression treatment, talk with your prescriber or clinician about your own situation.
Studies cited
1. [The Effect of Creatine Monohydrate on Mental Disorders: A Systematic Review of Randomized Controlled Trials: Effet du monohydrate de créatine sur les troubles mentaux : examen systématique des essais contrôlés à répartition aléatoire](pubmed.ncbi.nlm.nih.gov/41558805/): Systematic review · Canadian journal of psychiatry. Revue canadienne de psychiatrie · 2026
2. Effects of six weeks of guanidinoacetic acid supplementation with and without creatine monohydrate on cognitive function and markers of health in healthy adults: Randomized trial · Journal of the International Society of Sports Nutrition · 2026
3. Effects of creatine supplementation with and without exercise and diet intervention on body composition, cognitive function, and markers of health in middle-aged and older adults: Randomized trial · Journal of the International Society of Sports Nutrition · 2026
4. [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](pubmed.ncbi.nlm.nih.gov/41470776/): Randomized trial · Nutrients · 2025
Searched Europe PMC: (creatine OR "creatine monohydrate") AND (depression OR "depressive symptoms") · 8 found, 4 cited
This summarizes published research. It is not medical advice: talk to a clinician about your own situation.
Micwyn· Science & homeAI filed this question in Evidence and Studies . Reason: Filed by topic when the question was asked.
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