Creatine monohydrate: dosage, effectiveness and myths
The best documented sports supplement: mechanism, loading protocols, maintenance dose, effects on strength, kidney safety and quality criteria.

01Key points
- Creatine monohydrate is the most studied performance supplement, with hundreds of controlled trials.
- Main effect: better short, intense efforts, repeated sets, maximal strength and training volume.
- Simple protocol: 3 to 5 g per day, every day, with no need for cycling.
- Monohydrate remains the reference for evidence-to-price ratio.
02What is creatine?
Creatine is a molecule naturally present in muscle, synthesised by the body and supplied by meat and fish. It is stored as phosphocreatine, an energy reserve available within seconds.
03How it works
During intense effort, ATP is consumed very quickly. Phosphocreatine regenerates ATP almost instantly. Increasing muscle stores therefore sustains maximal efforts for longer and speeds recovery between sets.
04Documented benefits
- Strength and power in efforts under thirty seconds.
- Higher training volume, and therefore faster lean mass gains over several weeks.
- Better recovery between sets and sessions.
- Benefits are also seen in vegetarians, whose baseline stores are lower.
05What the science says
Position stands from sports nutrition societies consider creatine monohydrate effective and safe in healthy adults. Typical strength gains reported in meta-analyses range from about 5 to 15 % depending on the exercise, training status and protocol length.
06Dosage and protocols
- Standard protocol: 3 to 5 g per day, saturation reached in three to four weeks.
- Loading protocol: around 20 g per day in four doses for five to seven days, then 3 to 5 g maintenance. It saturates faster but increases digestive discomfort.
- Daily consistency matters more than exact timing, rest days included.
07Before or after training?
The difference between timings is small in the literature. Taking creatine close to the session with carbohydrates and protein is slightly favoured in several studies, but consistency remains the decisive factor.
08Weight gain and water retention
Creatine increases intracellular water: one to two kilos in the first weeks is common and is not fat. It does not cause subcutaneous puffiness.
09Kidney safety
In healthy adults, long-term follow-ups show no kidney damage. Blood creatinine may rise slightly without indicating dysfunction. With pre-existing kidney disease or chronic medication, seek medical advice.
10How to choose a product
- Prefer monohydrate, ideally micronised, over costlier and less studied exotic forms.
- Look for anti-doping and purity certification if you compete.
- Check for the absence of unnecessary additives and sweeteners.
- Compare price per gram of actual creatine, not per tub.
11Common mistakes
- Stopping after two weeks for lack of instant results.
- Increasing doses hoping for faster gains.
- Neglecting hydration and daily protein intake.
- Expecting endurance benefits, where the effect is marginal.
12Our conclusion
Creatine monohydrate offers the best effectiveness-to-price ratio for strength and explosive sports. Three to five grams daily, every day, alongside structured training and sufficient protein.
13FAQ
- Should I cycle it? No, continuous use is well tolerated.
- Is it useful for endurance? Rarely, apart from final sprints and hill work.
- Can women take it? Yes, protocols and benefits are comparable.
14Sources
This article draws on International Society of Sports Nutrition position stands and meta-analyses published in exercise physiology journals. Informational content, not medical advice.
By
Tomás Leal
Works with endurance athletes on periodised fuelling strategies.