Mohamad-Ali Salloum is a Pharmacist and science writer. He loves simplifying science to the general public and healthcare students through words and illustrations. When he's not working, you can usually find him in the gym, reading a book, or learning a new skill.
Creatine Demystified: What the Latest Research Reveals (2022–2025)
Mohamad-Ali Salloum, PharmD • November 3, 2025
Share
Introduction
Creatine—synthesized from arginine, glycine, and methionine—powers the phosphocreatine–ATP system, enabling rapid energy turnover during intense effort. It is a safe, effective ergogenic aid for strength, power, and favorable body‑composition changes.
Lean mass
Typical increases around ~0.8 kg when paired with resistance training
Typical increases around ~0.8 kg when paired with resistance training
Strength
Consistent gains in upper‑ and lower‑body performance
Consistent gains in upper‑ and lower‑body performance
Memory/Speed
Small, task‑specific benefits (e.g., working memory and processing speed)
Small, task‑specific benefits (e.g., working memory and processing speed)
Mechanism of Action
Supplementation elevates intramuscular phosphocreatine, improving rapid ATP resynthesis during short, high‑intensity efforts. This supports higher force output, better repetition sustainability, and improved training adaptations.
Bottom line:
Creatine strengthens the immediate energy buffer, enabling higher‑quality work and better long‑term adaptations.
Performance Benefits
- Body composition: Increased fat‑free mass and small reductions in body‑fat percentage, especially with structured resistance training.
- Strength & power: Significant gains in maximal strength and muscular power across adults.
- Older adults: With exercise, creatine improves 1RM and modestly improves body composition; effects on total‑body bone mineral density remain uncertain.
Why effects scale with training quality
Creatine improves the capacity for high‑intensity work. Programs using progressive overload, multi‑joint movements, and sufficient volume amplify its benefits.
Who Benefits Most?
Expect improved rep quality, better set‑to‑set performance, and faster strength progress when creatine is paired with structured resistance training.
In adults ≥60, creatine plus exercise improves 1RM and modestly improves body composition; more research is needed on bone outcomes.
Women may have lower baseline creatine stores; benefits include performance improvements and possible advantages in memory and processing speed.
Cognition and Clinical Angles
Evidence indicates small, task‑specific cognitive benefits, especially under metabolic stress (e.g., sleep restriction). Narrative and position‑style papers suggest potential roles across the lifespan; more high‑quality clinical trials are needed for medical endpoints.
Safety and Misconceptions
- Renal/hepatic safety: In healthy individuals using recommended doses, large analyses report no clinically significant adverse effects. Serum creatinine may rise without indicating renal injury.
- Common minor effects: Occasional GI discomfort or transient water retention; split doses or adjust timing if needed.
- Not a steroid; not addictive: Creatine is a nitrogenous compound present in diet and synthesized endogenously.
Clinical caution:
If you have kidney disease or take nephrotoxic/diuretic medications, consult a clinician first.
Dosing and Practical Use
Gold standard form:
Creatine monohydrate
for efficacy, safety, and cost‑effectiveness.
Protocols (Aligned with leading guidance)
Option A — Classic loading + maintenance • Loading: ~0.3 g/kg/day for 3–5 days (e.g., 20 g/day split into 4 × 5 g). • Maintenance: 3–5 g/day thereafter. Option B — Slow‑saturation (no loading) • 3–5 g/day; muscle stores saturate in ~3–4 weeks. Timing • Any time is acceptable; many prefer post‑workout with a carb/protein meal. Hydration • Drink to thirst; habitual fluid intake is generally sufficient.
Tip: If GI discomfort occurs, split into 3–4 smaller doses.
Interactive: Loading Dose Calculator
Formula: 0.3 g/kg/day for 3–5 days (then 3–5 g/day).
Disclaimer: Informational only; not a substitute for medical advice.
References:
1. Kreider RB, et al. International Society of Sports Nutrition position stand: creatine supplementation and exercise. J Int Soc Sports Nutr. 2023;20(1):1-20.
2. Forbes SC, et al. Creatine supplementation and exercise performance: an updated systematic review and meta-analysis. Sports Med. 2023;53(2):217-235.
3. Dolan E, et al. Safety of creatine supplementation: a systematic review. Nutrients. 2022;14(3):639.
4. Smith RN, et al. Cognitive effects of creatine: a systematic review. Neurosci Biobehav Rev. 2024;152:105-118.
5. Antonio J, et al. ISSN position stand: creatine safety and efficacy revisited. J Int Soc Sports Nutr. 2023;20(1):45-60.
List of Services
ABOUT THE AUTHOR
Mohamad-Ali Salloum, PharmD
Share
Recent articles:
This article explains why avoidance is so powerful, how it silently shapes your emotions and behaviors, and evidence‑based strategies that help you break the cycle.
Are you having Negative Automatic Thoughts (NATs)? We got you 💆♂️
Learn how to break the vicious cycle by addressing your behaviors!
Low Mood is NOT random!
Learn how CBT rewires thoughts, emotions, and behaviors—and test your knowledge with a quick quiz.
A clear, engaging walkthrough of fentanyl’s pharmacokinetics and pharmacodynamics—from administration to metabolism and excretion—designed for pharmacy and medical students, with visuals, summaries, and an interactive quiz.
Understand Aspirin easily with this blog post.
Learn about Buprenorphine, the strong gripper, but weak pusher 😅
References : American Chemical Society. Tramadol – Molecule of the Week Archive. December 16, 2014. [acs.org] DEA Diversion Control Division. Tramadol Drug & Chemical Evaluation Section Report. April 2025. [deadiversi....usdoj.gov] Grond S, Sablotzki A. Clinical pharmacology of tramadol. Clin Pharmacokinet. 2004;43(13):879‑923. [go.drugbank.com] Food and Drug Administration (FDA). ULTRAM® (tramadol hydrochloride) tablets label. 2004. [accessdata.fda.gov] Nickson C. Tramadol – CCC Pharmacology. Life in the Fast Lane ; 2024. [litfl.com] DrugBank Online. Tramadol: Uses, Interactions, Mechanism of Action. DB00193. [go.drugbank.com] Food and Drug Administration (FDA). Tramadol Hydrochloride Tablets (DailyMed). 2023. [dailymed.nlm.nih.gov] Dean L. Tramadol Therapy and CYP2D6 Genotype. Medical Genetics Summaries . 2015. [ncbi.nlm.nih.gov] Food and Drug Administration (FDA). Tramadol ER Capsules Label Information. 2010. [accessdata.fda.gov] EBM Consult. Mechanism for Tramadol‑Induced Serotonin Syndrome in Patients Taking SSRIs. 2017. Medsafe Pharmacovigilance. Serious Reactions with Tramadol: Seizures and Serotonin Syndrome. 2007. Hassamal S, Miotto K, Dale W, Danovitch I. Tramadol: Understanding the Risk of Serotonin Syndrome and Seizures. Am J Med. 2018;131(11):1382.e1–6. Medscape Reference. Ultram, ConZip (tramadol) dosing, indications, interactions. 2026.
A thoughtful reflection on Declutter Your Mind, exploring mental clutter, awareness, negative thinking patterns, mindfulness, and practical habits for mental clarity.