Creatine is, by far, the most studied supplement in the training world — and also one of the most surrounded by myths, from "it bloats you with water" to "it damages your kidneys." Here's what the evidence actually says.
- 3–5 grams per day, every day, is the standard science-backed dose
- It's not a steroid — your body already produces it naturally
- In healthy people there's no evidence it damages kidneys
- Monohydrate is the most studied and cheapest version — no need to pay for "premium" versions
With over two decades of studies backing it, creatine monohydrate has one of the best-documented safety and efficacy profiles in all of sports nutrition science. Even so, it remains one of the most misunderstood supplements. This guide covers everything you need to know to use it well.
I took it myself for a while, and what I noticed most wasn't really the muscle — it was the energy available for the last sets of each exercise. Sets that I normally finished dragging myself through, I felt stronger in. That's exactly what the evidence says: it's not magic, but it does show up in day-to-day performance.
What is creatine?
Creatine is a substance your body produces naturally (in the liver, kidneys, and pancreas) and that you also get from foods like red meat and fish. It's stored primarily in muscle, where it helps regenerate the quick energy your muscles use during short, intense efforts — like lifting weights or sprinting.
Supplementing it simply increases muscle creatine stores above what a normal diet achieves on its own, which translates to more energy available for that type of explosive effort.
What benefits does it actually have?
More strength and power
This is the most supported benefit: it improves performance in strength exercises and short, intense efforts — allowing you to train with more volume or intensity over time.
Greater muscle mass gain
By allowing you to train with sustained higher intensity, it indirectly supports more muscle gain over weeks compared to not taking it.
Better recovery between sets
It helps your muscles regenerate energy faster between efforts — noticeable especially in multiple high-intensity sets.
Possible cognitive benefits
More recent research suggests benefits in brain function under fatigue or sleep deprivation, though this area is still being actively studied.
Better cellular hydration (the least known benefit)
Creatine draws water into muscle cells. This isn't just aesthetic — that extra intracellular fluid can help you train better in heat or high-sweat conditions, something that's almost never mentioned alongside the "gym" benefits.
How to take it: the correct dose
There are two ways to start:
| Direct (recommended) | With loading phase | |
|---|---|---|
| Daily dose | 3–5 g, single dose | 20 g (4 doses of 5g) × 5–7 days, then 3–5 g |
| Time to saturate stores | 3–4 weeks | 5–7 days |
| Result at 4 weeks | Same | Same |
| Digestive discomfort | Rare | More common (high dose at once) |
| Who it's for | Most people | If you have a competition or event coming up and want the effect now |
In practice, the difference between both disappears after the first month — the loading phase only speeds up the clock, it doesn't improve the final result.
Does the time of day matter?
Less than you'd think. What matters most is taking it every day consistently, whatever the time. Some studies suggest a slight advantage to taking it close to training (before or after), but the difference is small — the real key is daily consistency, not the exact hour.
You can mix it with water, juice, or your protein shake — it doesn't need anything special to absorb well.
Common myths, debunked
"It damages kidneys"
In healthy people with no prior kidney disease, there's no evidence that creatine at standard doses (3–5g/day) causes kidney damage. This myth comes from confusing elevated creatinine (a marker that rises naturally from taking creatine) with actual damage — they're different things.
"It's a steroid or something similar"
It has no relation to steroid hormones whatsoever. It's a molecule your own body already produces naturally; supplementing it just increases what you already have naturally.
"It makes you retain water in a way that looks bad"
It does retain some water, but it's intramuscular (inside the muscle), not subcutaneous bloating. In fact, that retention usually makes the muscle look fuller and more "pumped," not puffy.
"If you stop taking it, you lose all the muscle you gained"
False. When you stop, your creatine stores gradually return to normal levels, but the muscle you gained through training stays — creatine was a tool for training better, not the direct source of the muscle.
Who should avoid it or consult first?
It's safe for the vast majority of healthy people, but it's worth consulting a doctor first if you have a pre-existing kidney or liver disease, are on medication affecting those organs, or are under 18 — in that last case, the evidence is much broader in adults than in adolescents, so getting clearance from a health professional first is a good idea.
What type of creatine to buy?
Creatine monohydrate is the most studied, cheapest, and most scientifically backed form out of all the variants on the market (HCL, ethyl ester, buffered, etc.). None of the "premium" versions have been shown to be superior in serious studies — monohydrate remains the safest and most effective option.
Is it worth paying more for a "premium" brand?
Almost never. A generic creatine monohydrate and a name-brand one often cost very differently per gram, but contain exactly the same molecule. Where it does make sense to pay attention: make sure it says "creatine monohydrate" (not some odd blend with an eye-catching name), and that the container shows a purity seal or third-party analysis — that says more about real quality than the price or packaging.
This article is informational and does not replace the advice of a doctor or nutritionist, especially if you have any kidney or liver condition, or are under 18.
- International Society of Sports Nutrition (ISSN) — Position Stand: Creatine Supplementation and Exercise (Kreider et al., 2017)
- MedlinePlus — Creatine