Creatine Monohydrate: Dosage, Benefits and Side Effects

Creatine is stored in muscle as phosphocreatine. During short, high-intensity efforts (≤10 seconds), phosphocreatine donates a phosphate to ADP to regenerate ATP, the cell's energy currency. Higher muscle stores mean more ATP regeneration capacity, which translates to slightly more reps, sprints, or jumps before fatigue.

• Strength & power: 5–15% improvement in 1-rep max and sprint output across hundreds of trials.
• Lean mass: 1–2 kg additional gains over a few months when combined with resistance training.
• Brain function: Emerging evidence for improved short-term memory and cognitive performance under sleep deprivation.
• Sarcopenia: Slows age-related muscle loss in older adults when combined with resistance training.

Over 1,000 published studies including hundreds of RCTs. ISSN position stand (2017) classifies creatine monohydrate as the most effective ergogenic supplement available, safe for long-term use, and with no advantage from 'newer' creatine forms (HCl, ethyl ester, magnesium chelate).

5 g/day is the maintenance standard. An optional 'loading' phase of 20 g/day (split into 4×5 g) for 5–7 days saturates muscle stores faster but is not required. Take any time of day; timing relative to workouts has minimal impact.

The only consistent side effect is water retention (intracellular, in muscle — not bloat). Rare GI upset at high single doses. Does not damage kidneys in healthy individuals at recommended doses.

No clinically significant interactions. Caffeine may slightly blunt acute creatine effects but the long-term benefit is preserved. Discuss with a doctor if you have pre-existing kidney disease.