Creatine, a supplement commonly used for muscle development, is emerging as a potential add‑on treatment for depression, according to a recent systematic review.
The review examined five randomized controlled trials, four of which focused on major depressive disorder and one on bipolar depression with a current depressive episode. Researchers found that adding creatine monohydrate to standard care produced modest improvements in some studies, while others showed no significant benefit.
In one study, women with depression who received 5 grams of creatine daily alongside the antidepressant escitalopram reported greater improvement after eight weeks. Another trial found added value when creatine was combined with cognitive behavioral therapy, whereas studies involving teenage girls and a bipolar depression cohort showed no measurable advantage.
Scientists suggest the benefit may stem from creatine’s role in cellular energy production, potentially influencing dopamine and serotonin pathways that are targeted by many antidepressants. However, the relationship between brain creatine levels and mood remains largely correlational, and the exact mechanisms are still under investigation.
Safety data indicate that creatine is generally well tolerated, with mild gastrointestinal discomfort being the most common side effect. Nonetheless, individuals with kidney disease, those who are pregnant, or who have other medical conditions should consult a healthcare professional before starting the supplement.
Given the mixed results, larger and well‑controlled trials are necessary to determine whether creatine can reliably enhance depression treatment. Current evidence does not support changing clinical practice but highlights creatine as a promising adjunct rather than a standalone therapy.
Until further research clarifies its efficacy and identifies which patients might benefit most, clinicians and patients should focus on evidence‑based treatments such as medication, psychotherapy, exercise, and sleep hygiene. Creatine remains an area of interest that warrants continued scientific exploration.
