The dosing answer is short and has been stable in the literature for twenty years: 3 to 5 grams of creatine monohydrate per day, every day, with no loading phase. If you are on a GLP-1 receptor agonist, the no-loading part carries more weight than it does for the general population, and the reason is worth understanding rather than taking on faith.

The dose: 3 to 5 grams daily

The International Society of Sports Nutrition position stand on creatine sets the maintenance dose at 3 to 5 grams per day of creatine monohydrate to keep muscle stores elevated. Larger individuals may need proportionally more, but for most women in the population this site is written for, 5 grams is a sensible landing spot and 3 grams is sufficient.

There is no benefit to going higher once your stores are saturated — muscle creatine has a ceiling, and past it the excess is cleared rather than stored. Neither is there a case for cycling on and off: the mechanism depends on the stores staying full, which makes it a daily habit rather than a phase.

Take it on rest days too. Saturation is a standing state, not something you top up before a session.

Why a loading phase is unnecessary

Loading means roughly 20 grams a day — usually 0.3 g/kg split into four doses — for 5 to 7 days, then dropping to the normal maintenance dose. It is not folklore; the ISSN position stand describes it as one of two valid routes.

Here is the honest comparison. Loading saturates muscle creatine stores in about a week. Taking 3 grams a day with no loading phase reaches the same saturation in about 28 days. Same destination, different arrival time.

That is the entire difference. Loading does not produce higher peak stores or a larger eventual effect. It buys you roughly three weeks, once, at the start of something you intend to do indefinitely. The ISSN’s own framing is that the gradual approach may have less effect on performance until stores are full — a statement about the first month, not about where you end up.

For someone chasing a competition date, three weeks might matter. For someone adding creatine to a long-term strength habit, it does not.

Why loading is a particularly bad idea on a GLP-1

This is where the general advice and the GLP-1 advice come apart.

The dose-limiting side effects of creatine are gastrointestinal: bloating, stomach discomfort, cramping, and nausea. They are dose-dependent and cluster around large single servings — exactly what a loading protocol consists of. Spread over four doses, 20 grams a day still means four servings each larger than the maintenance dose you would otherwise take once.

Now consider what a GLP-1 receptor agonist is already doing. Delayed gastric emptying is a documented pharmacological effect of these medications, stated plainly in the FDA prescribing information for Ozempic (semaglutide), and nausea, vomiting, and diarrhoea are among the most commonly reported adverse reactions. Food and fluid sit in your stomach longer, and fullness arrives earlier.

So loading on a GLP-1 means adding the most GI-provocative version of a supplement on top of a medication whose signature side effects are GI. And the consequence is worse than a bad week: if you feel unwell, you will not know whether it was the creatine, a dose escalation, or something you ate. You have made your own data uninterpretable during the exact period when you are learning how the medication affects you.

The cost of skipping it is three weeks of a slower ramp. The cost of doing it is a plausible week of nausea and a confounded picture. That trade is not close.

The same reasoning applies to starting at all: if you are mid-escalation and your gut is unsettled, waiting until things stabilise is reasonable. One variable at a time.

About the loading advice aimed at women over 40

There is a genre of article recommending a 20 gram loading protocol specifically to perimenopausal women, sometimes framed as necessary to overcome hormonal changes or “kickstart” results. We are not naming individual sites — the pattern matters more than any one publisher.

The recommendation is wrong on its own terms. There is no evidence base showing that women over 40 require a loading protocol the general literature does not. The saturation kinetics are the same. What differs for this population is context — often a lower body mass, often a calorie deficit, and frequently a medication that slows gastric emptying. Every one of those argues for the gentler protocol.

When you see a loading recommendation, check whether it survives the question “what does loading achieve that four weeks of normal dosing does not?” The honest answer is “it gets there faster,” and that is not a reason to accept a higher side-effect load on a GLP-1.

Timing: it does not matter much

Take it whenever you will actually remember. Morning, evening, with or without a meal, before or after training — the differences reported in the literature are small and inconsistent, and none survive the practical fact that the supplement only works if you take it every day. A perfectly timed dose you take four days a week is worse than a badly timed dose you take seven.

If GLP-1 nausea is part of your day, taking it with food is worth trying — often with the meal you tolerate best.

What to mix it with

Creatine monohydrate dissolves adequately in most things, and micronized versions dissolve better than standard grind. Practical notes:

  • Water is fine. The old advice about needing a large carbohydrate load to drive uptake is overstated at maintenance doses.
  • Warm liquid dissolves it better than cold. Grit at the bottom of a cold glass is a solubility issue, not a product defect.
  • Coffee is fine. The caffeine-blunts-creatine idea has not held up as a practical concern.
  • A protein shake is a good vehicle if you already drink one — and on a GLP-1 protein is the harder target anyway.
  • Stir it into something you finish. Creatine settled at the bottom of an abandoned glass is not a dose.

Give the volume a thought on a GLP-1. If a full 16-ounce shake is more than your stomach wants, use less liquid rather than skipping the dose.

Which form to buy

Creatine monohydrate. That is the form the research was done on, and none of the alternatives — hydrochloride, ethyl ester, buffered, liquid, “advanced” blends — has outperformed it head-to-head. They usually cost more per gram of actual creatine.

Micronized monohydrate is the same molecule ground finer. It mixes better, but it is not a stronger ingredient.

Look for third-party certification — NSF Certified for Sport, Informed Sport, or Creapure raw material. In an unregulated supplement market that is your best assurance that the tub contains what the label says. We go through what those certifications actually verify in our analysis of Thorne Creatine.

Hydration and the rest of the picture

Creatine draws water into muscle cells, so fluid needs go up modestly. On a GLP-1, where reduced appetite often brings reduced thirst, that is worth tracking deliberately.

The other thing to know before your next blood panel: creatine raises serum creatinine, which can lower a calculated eGFR without your kidneys changing. Tell your clinician you take it. We cover why, and what to ask, in creatine, creatinine and your eGFR.

And keep the dose in proportion. Creatine supports the training that protects your lean mass; it is not itself the protection. The evidence on what holds onto muscle during GLP-1 weight loss points at resistance training and adequate protein. The complete guide to creatine on a GLP-1 puts the whole picture together.

Common questions

Is 5 grams too much for a smaller woman?

3 grams is a legitimate dose at the lower end of the ISSN range, and for someone with less muscle mass it is a reasonable choice. Starting at 3 grams and staying there is fine.

What if I miss a day?

Nothing happens. Saturation buffers a missed dose comfortably. Take the normal amount the next day rather than doubling up.

Will it interfere with my GLP-1?

There is no established pharmacological interaction between creatine monohydrate and GLP-1 receptor agonists. The overlap that matters is symptomatic — both can produce GI discomfort — which argues for modest doses and one change at a time, not for avoidance. As with any supplement alongside a prescription medication, your prescriber should know about it.

The short version

3 to 5 grams of creatine monohydrate daily, indefinitely, on training days and rest days alike. Skip the loading phase: it reaches the same saturation about three weeks sooner and concentrates the GI side effects into a week when your GLP-1 is already producing similar symptoms. Timing and mixing are flexible, and the form question has one answer. Buy certified monohydrate, take it consistently, and put your effort into the training and protein that do the heavier work.