Neuropsychiatrist: One SINGLE DOSE of Creatine is Wrecking the Depression & Anxiety Market

The study used 0.35 g/kg, which is a heavy dose even by loading standards. Dr. Fabiano noted that most mental health creatine studies have used only 5 g daily with no loading phase, so this high-dose approach may be an unrecognized method to quickly raise brain creatine levels. He cautioned that the finding needs replication and dose optimization, but personally he has used a higher-than-usual dose (10 g) after being on call and noticed subjective benefits. He does not recommend regular high doses due to potential water retention, but for a ‘once in a while’ rescue, it’s plausible.

Dr. Fabiano described that current mental health trials have mostly used 5 g/d for 8 weeks, often without a loading phase. He hypothesizes that these may have been underdosed and too short. He himself moved to 10 g/d after reviewing emerging literature. He emphasized that the brain has fewer creatine transporters than muscle, so a higher plasma level over a longer period may be needed to meaningfully increase brain creatine. He also highlighted that 5 g of creatine from supplement equals the amount in roughly 3 lbs of red meat, making supplementation practically easier than diet.

Dr. Fabiano explained that the hardest part of depression is taking the first step—even when someone wants to exercise, the lack of motivation can feel paralyzing. Creatine might provide just enough of an energy buffer to turn ‘I can’t’ into ‘maybe I can try a short walk’. As that becomes habitual, the behavioral activation plus creatine’s biological effects reinforce new neural pathways, gradually dismantling the rigid negative thought loops. He also noted that social aspects (joining a gym or run club) can serve as informal exposure therapy for anxiety, and creatine may give the courage to face those social fears.

Dr. Fabiano noted that although ‘increasing energy’ sounds counterintuitive for anxiety, prolonged anxiety actually leads to physical and mental exhaustion because the brain is racing all day. He pointed out that breaking the cycle of negative thought patterns is central to anxiety treatment, and creatine could be the ‘fuel on the fire’ needed to carve new healthier cognitive pathways, similar to the depression model. He shared an analogy of water carving new canyons: the brain needs extra water (energy) to create new routes. Creatine provides that. He wants studies to test this adjunctive approach.

Dr. Fabiano emphasized that this study reframes how we think about creatine: it might not need to build up in muscle to benefit cognition. The finding hints that a large bolus could preferentially deliver creatine to the brain when muscles are already saturated or when the brain is under high metabolic demand. He mentioned that previous high-dose studies were only safety studies, not efficacy ones, so this is one of the first to measure cognitive performance. He personally started using higher doses (up to 10 g per day) and takes extra when sleep-deprived, noticing benefits. He also sees potential utility for shift workers or residents working prolonged shifts.

Dr. Fabiano explained that depression is a metabolically demanding state; oxidative phosphorylation may be impaired. Creatine can serve as a rapid energy shunt because it donates phosphate to regenerate ATP without oxygen. This reserve can let a person do ‘more mental reps’, whether that means getting out of bed, starting therapy, or challenging automatic negative thoughts. He noted that early steps are the hardest because lack of motivation is a core symptom, so even a small energy bump could be enough to help someone begin a walk or go to a therapy session, ultimately breaking the negative cycle. He tied this to neuroplasticity: the energy to ‘carve new canyons’—rewire the brain—may come from having those creatine phosphate stores.

Dr. Fabiano mentioned a single 6-month inpatient study where participants given 5–10 g creatine daily showed improvement in overall symptom scores, including negative symptoms. He was surprised they didn’t see cognitive improvements, but the sample was likely underpowered. He believes the greatest utility lies in targeting residual negative symptoms—helping someone regain the drive to work, socialize, or exercise. He noted antipsychotics often cause severe metabolic side effects (10-30 lb weight gain/year), so pairing them with creatine and exercise could simultaneously treat negative symptoms and combat drug-induced metabolic burden. He stressed creatine would never be a monotherapy for schizophrenia, but as an adjunct to improve quality of life it’s promising.