Creatine for Mental Fatigue
BA systematic review found moderate certainty evidence for positive effects on memory and processing speed. Single-dose supplementation improved cognitive performance during sleep deprivation through ATP replenishment.
The Bottom Line
A systematic review found moderate certainty evidence for positive effects on memory and processing speed. Single-dose supplementation improved cognitive performance during sleep deprivation through ATP replenishment.
Key Study Findings
Population: narrative review of creatine supplementation effects on brain function
Population: rsv infection from january 2019 to december 2020
Population: healthy participants
Population: elderly
Population: patients with fatigue and 240 controls without fatigue,
Population: Healthy individuals
Key Statistics
8
Studies
600
Participants
Positive
Grade
Referenced Papers
Dosage & Usage
mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units
Commonly Used Dosages
- general:
- 3-5 g/day creatine monohydrate
- cognitivesupport:
- 5 g/day
Upper limit: 5 g/day considered safe for long-term use (ISSN position)
Dosages Studied in Research
| Dosage | Duration | Effect | N |
|---|---|---|---|
| None | -- | Mixed | -- |
| 71.9% | 24 weeks | Positive | -- |
| 20 g | -- | Positive | -- |
| 20 g/d | -- | Positive | -- |
| None | -- | Mixed | 480 |
| None | -- | Positive | 281 |
| None | -- | Positive | 16 |
| None | -- | Positive | -- |
Best taken: Any time of day; with or without food
Safety & Side Effects
Reported Side Effects
- ⚠ Water retention
- ⚠ Mild gastrointestinal discomfort
- ⚠ Weight gain (water weight)
- ⚠ Muscle cramping (rare, dose-dependent)
Known Interactions
- ● Nephrotoxic drugs (monitor kidney function with concurrent use)
- ● Caffeine (may partially attenuate creatine loading, debated)
- ● NSAIDs (theoretical additive kidney stress at high doses)
Tolerable upper intake: 5 g/day considered safe for long-term use (ISSN position)
Always consult your healthcare provider before starting any supplement.
Frequently Asked Questions
Does Creatine help with Mental Fatigue?
How much Creatine should I take for Mental Fatigue?
Are there side effects of Creatine?
How strong is the evidence for Creatine and Mental Fatigue?
Related Evidence
Other ingredients for Mental Fatigue
Creatine for other conditions
FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. The products and information on this website are not intended to diagnose, treat, cure, or prevent any disease. The evidence grades presented are based on our analysis of published peer-reviewed research and do not constitute medical advice. Always consult your healthcare provider before starting any supplement regimen.