Creatine, best known as a performance supplement in sports, is now attracting attention in mental health research. A new review published in Brain Medicine examined whether the compound could also support people living with depression.
What the Review Found
The analysis brought together six reports from five randomized controlled trials carried out in countries including South Korea, the United States, Brazil, India, and Israel. In total, 238 participants were involved at the start of the studies, with 126 receiving creatine and 112 taking placebo.
The results were uneven. Two trials suggested creatine may help reduce depressive symptoms, while three found no meaningful difference from placebo. One study involving bipolar depression also reported a possible mood-switching concern, which researchers say deserves closer attention before broader use is considered.
Why Researchers Are Interested
Scientists are exploring creatine because the brain depends heavily on energy production. Creatine helps cells regenerate ATP, the molecule that powers cellular activity. That makes it an intriguing candidate for conditions where brain energy balance may be disrupted.
One of the more promising findings came from a study in women with major depressive disorder. In that trial, adding five grams of creatine daily to escitalopram led to greater symptom improvement after eight weeks than escitalopram alone. Another study found better results when creatine was combined with cognitive behavioral therapy.
Still, the broader picture remains uncertain. Other trials did not show clear benefits in people whose depression had not improved with medication, in adolescent girls, or in bipolar depression. The review also notes that the studies were small, used different methods, and did not include enough diverse participants to support firm conclusions.
Researchers involved in the review described creatine as a promising but unproven option. They emphasized that the current evidence is not strong enough to change clinical practice, even though the supplement appears to be well tolerated in most cases.
For now, creatine remains an interesting candidate in the search for more accessible mental health support, and future larger trials may clarify whether it can become part of a more personalized approach to depression care.