Overview
Creatine Monohydrate is tracked as a supplement in Milligram's compound library. Naturally occurring amino acid derivative.
With a half-life of ~3 hours, Creatine Monohydrate requires daily administration in most observed protocols. Taken orally, it has a bioavailability of approximately 99% via its primary route.
Plasma half-life approximately 3 hours. Near-complete oral bioavailability (~99%). Muscle creatine stores saturate over 2–4 weeks of consistent intake. One-compartment model.
Mechanism of Action
Creatine Monohydrate's pharmacological activity involves the following key pathways:
Primary Mechanism
Creatine Monohydrate exerts its effects through its established pharmacological pathway. Its mechanism has been characterized in published research.
Bioavailability Profile
Creatine Monohydrate has high oral bioavailability, which influences dosing strategy and administration timing.
Dosing Protocols
The following protocols represent commonly observed dosing patterns. These are observational summaries, not recommendations.
Dose
5 g/day
Route
Oral
Frequency
2-3 times daily
Duration
Ongoing
Dose
10 g/day
Route
Oral
Frequency
2-3 times daily
Duration
Ongoing
Frequently Asked Questions
What is Creatine Monohydrate and how does it work?
Creatine Monohydrate is the most extensively studied sports supplement, with over 500 published human trials. It is a naturally occurring compound synthesized from amino acids (arginine, glycine, methionine) and stored primarily in skeletal muscle as phosphocreatine. Supplementation increases intramuscular phosphocreatine stores, which regenerates ATP during high-intensity, short-duration activities like resistance training and sprinting.
How long does Creatine take to saturate muscles?
With a loading phase of 20 g/day (split into 4 doses) for 5–7 days, intramuscular creatine content increases approximately 20–40% and reaches saturation within one week. Without loading, taking 3–5 g/day reaches the same saturation level in approximately 28 days. A pivotal study confirmed that muscle creatine accumulation was virtually identical after 3 g/day for 28 days compared to 20 g/day for 6 days.
Is a Creatine loading phase necessary?
A loading phase is not required to achieve full muscle saturation. It simply accelerates the timeline from approximately 4 weeks to 1 week. Both approaches produce the same endpoint in intramuscular creatine stores. The no-load approach of 3–5 g/day is increasingly preferred because it avoids the transient gastrointestinal discomfort and water retention sometimes associated with loading doses.
Does Creatine cause water retention and weight gain?
Creatine draws water into muscle cells through osmosis, producing an initial weight increase of 1–3 kg during the first week of supplementation, primarily reflecting intracellular water. This is not subcutaneous water retention or bloating. Over weeks and months, creatine supplementation combined with resistance training is associated with increased lean muscle mass beyond the initial water-related weight change.
Can you take Creatine every day long-term?
Continuous daily supplementation of 3–5 g has been studied for durations up to 5 years with no adverse effects on kidney function, liver function, or other health markers in healthy individuals. The International Society of Sports Nutrition position statement confirms that creatine monohydrate is the most effective nutritional supplement for increasing high-intensity exercise capacity and lean body mass.
Is Creatine Monohydrate better than other forms of creatine?
Creatine monohydrate remains the gold standard form, with virtually all positive clinical data derived from this specific form. Alternative forms such as creatine HCl, buffered creatine, and creatine ethyl ester have not demonstrated superior efficacy in published research. Creatine monohydrate also has the advantage of being the most cost-effective and widely available form.