Creatine Shows Early Promise as Adjunctive Depression Treatment, but Evidence Is Mixed

What's new

A recent systematic review published in Brain Medicine explored the potential of creatine as a treatment for depression, moving beyond its well-known role in athletic performance. The review analyzed five randomized controlled trials involving 238 participants and found mixed results. While two studies, both focusing on women with major depressive disorder, reported that adding creatine to standard treatments improved symptoms, three other studies found no meaningful benefit. Researchers emphasize that while the findings are intriguing, the evidence is not yet conclusive enough to recommend creatine for routine clinical use in depression [1].

The science behind it

The hypothesis that creatine could impact depression stems from the brain's high energy demands. Creatine is crucial for rapidly regenerating adenosine triphosphate (ATP), the primary energy currency of cells, including those in the brain. Disruptions in brain creatine metabolism have been observed in individuals with mood disorders, leading scientists to investigate whether improving cellular energy production could alleviate depressive symptoms. Creatine may also influence neurotransmitters like dopamine and serotonin, which are vital for mood regulation and are targets for many antidepressant medications [1].

The systematic review identified six reports covering five randomized controlled trials conducted across various countries. These trials included participants with major depressive disorder and one with bipolar disorder experiencing a depressive episode. The studies varied in design, participant demographics (most were women, and two studies exclusively involved women), and the specific interventions used alongside creatine. Due to these differences, the data could not be combined for a single statistical analysis, leading researchers to evaluate each study individually [1].

Two studies demonstrated positive outcomes. One found that participants taking five grams of creatine daily alongside the antidepressant escitalopram experienced significantly greater reductions in depressive symptoms compared to those receiving escitalopram with a placebo. Another study showed that creatine, when combined with cognitive behavioral therapy, led to greater symptom reduction than therapy alone. Conversely, three other trials found no significant benefit: one in individuals with treatment-resistant depression, another in adolescent girls, and a third in people with bipolar disorder. Notably, two participants with bipolar disorder in one study developed hypomania or mania when taking creatine, suggesting potential differential effects depending on the underlying condition [1].

What it means in practice

For now, creatine remains an area of promising research rather than a recommended treatment for depression. The inconsistent findings across the reviewed studies mean that there isn't enough robust evidence to support its widespread clinical use. The positive results were primarily seen in women with major depressive disorder when creatine was used as an add-on to existing treatments like antidepressants or cognitive behavioral therapy. This suggests that if creatine does have a role, it might be as an adjunctive therapy rather than a standalone treatment [1].

Individuals considering creatine for depression should exercise caution and consult with a healthcare professional. The potential for adverse effects, such as hypomania or mania in individuals with bipolar disorder, highlights the importance of medical supervision. The current evidence does not allow for generalizations across all populations or types of depression. Future, larger-scale studies are needed to clarify creatine's efficacy, optimal dosing, and safety profile in diverse patient groups [1].

Caveats

The current evidence base for creatine as a depression treatment is limited. The reviewed trials were relatively small, and their methodologies varied, impacting the generalizability of the findings. The disproportionate number of women in the studies, particularly in those showing positive results, suggests that creatine's effects might differ between sexes, a possibility supported by animal studies. Furthermore, three of the five trials had some concerns regarding bias, which could influence their outcomes [1].

Researchers emphasize that the observed correlations between creatine metabolism and mood disorders do not prove causation. Depression is a complex condition involving multiple biological pathways, and creatine's potential role is likely one piece of a larger puzzle. More extensive and longer-duration clinical trials are necessary to determine if creatine offers a consistent and significant benefit for depression, whether different doses are more effective, and if it can be safely integrated into treatment plans for various patient populations [1].

Source: [1] https://www.sciencedaily.com/releases/2026/06/260630020231.htm