Does creatine help with anxiety? What the research does and doesn't show

The evidence doesn't support creatine as a treatment for anxiety or anxiety disorders. No dedicated trial has tested creatine supplementation against an anxiety outcome in a general or clinical population, and the most rigorous review of nutrient-based treatments across psychiatric conditions found no nutraceutical had sufficient evidence in any anxiety-related disorder at all.

What the evidence doesn't support

It doesn't support creatine, at any dose or form, as something that reduces anxiety symptoms, treats an anxiety disorder, or works as an alternative to therapy or medication for anxiety. This isn't a case of mixed or weak trials pointing in different directions — it's an absence of dedicated trials in the first place. A 2022 taskforce review from two major psychiatric societies, which set a high bar (meta-analyses or two-or-more RCTs) before rating any nutraceutical for a psychiatric use, concluded that no nutraceutical it reviewed, creatine included among the candidates considered, had sufficient evidence to support use in any anxiety-related disorder.

What the research actually covers

The 2022 taskforce (World Federation of Societies of Biological Psychiatry and the Canadian Network for Mood and Anxiety Treatments) reviewed a wide range of nutraceuticals and phytoceuticals against major psychiatric conditions, grading each by the strength and direction of the evidence. For anxiety-related disorders specifically, it found only N-acetylcysteine weakly supported, and only for OCD-related disorders — every other nutraceutical it assessed, across every anxiety-related condition, lacked sufficient evidence either way. Creatine wasn't singled out with its own anxiety trial to review; it simply isn't part of the anxiety evidence base the taskforce found.

Separately, a 2023 narrative review of creatine and brain health described creatine as having "shown promise for improving health outcome measures associated with... depression, and anxiety," in a single sentence alongside several other conditions. That review didn't cite a controlled anxiety trial to support the anxiety claim specifically, and several of its authors disclosed financial or advisory ties to companies that manufacture or sell creatine. A review describing "promise" isn't the same as a review reporting a trial result, and this page is about the latter.

Questions people ask

Does creatine help with anxiety?

No trial has tested that question directly, and the most thorough review of nutraceuticals for psychiatric conditions found no supplement had sufficient evidence for any anxiety-related disorder. There's nothing in the research to answer yes to.

Can creatine cause anxiety?

The general creatine safety literature — position statements and trials covering everyday and much higher doses — documents gastrointestinal effects and short-term water retention as the main things to watch for. It doesn't list anxiety or anxiety-like symptoms as a reported side effect.

Can creatine help with anxiety in athletes or people under a lot of physical stress?

We didn't find a trial testing creatine against anxiety symptoms in an athletic or physically stressed population specifically. That's a gap in the research, not a documented benefit.

Is there a specific dose of creatine for anxiety?

No. Without a trial establishing any effect on anxiety in the first place, there's no dose to recommend for it.

When to talk to a doctor

Anxiety that interferes with daily life, work, sleep or relationships is worth raising with a doctor. Creatine is not a treatment for anxiety or an anxiety disorder, and nothing in the research above supports using it as a substitute for an evaluation, therapy or medication a doctor might recommend. If you take medication for anxiety or any other condition, or are pregnant or nursing, talk to a doctor before adding any supplement.