Can you take creatine and protein powder together?

August 28, 2026

Creatine monohydrate powder in labeled tub with measuring scoop

Yes. Creatine and protein powder mix fine in the same shake, at the same time, with no meaningful interaction between them. Some research suggests protein and carbohydrate can modestly increase how much creatine your muscles retain, but the real reason to combine them is simpler: one scoop of each, one shake, done.

Is there any interaction between creatine and protein?

Not one that matters. Creatine gets into muscle through its own dedicated transporter, called CreaT1, whose transport site is specifically adapted to creatine's own molecular structure [5]. That's a mechanistic finding, not a study of your shaker bottle, but it explains why nobody has turned up a reason the two would block each other. Nothing in the research points to a problem from combining them: in one controlled trial, all 34 participants mixed 25 g of whey protein isolate and 25 g of maltodextrin into every dose for eight weeks, and 23 of them added 5 g of creatine to that same shake. Nothing in the research identifies a problem specific to combining them: in one controlled trial, all 34 participants mixed 25 g of whey protein isolate and 25 g of maltodextrin into every dose for eight weeks, and 23 of them added 5 g of creatine to that same shake. The trial did record adverse events, mostly mild to moderate abdominal symptoms and a few cases of nausea, and all of them resolved by the end of the first two weeks. The paper reports these without assigning a cause, so they are not evidence for or against the combination [4].

Does protein actually help creatine get absorbed?

Somewhat, and this is where the research gets specific enough to be interesting. A controlled feeding study had 12 men take creatine four times in a day, 5 g a dose, on four separate occasions, each occasion pairing every dose with a different drink: 5 g of carbohydrate, 50 g of carbohydrate, 96 g of carbohydrate, or a mix of 50 g protein and 47 g carbohydrate. The protein-carb combination and the high-carb drink produced the same insulin response, and both increased whole-body creatine retention by roughly 25% compared to the low-carb condition [1]. Insulin appears to be doing the work here, not protein by itself.

That's a real effect, but it comes with real limits. It was one day of feeding, not a training study, and the protein dose tested was 50 g, close to two scoops of a typical whey isolate rather than one. The International Society of Sports Nutrition position stand summarizes the broader picture fairly: adding carbohydrate, or carbohydrate and protein together, to a creatine dose appears to increase how much muscle takes up, but that hasn't been shown to translate into a bigger performance benefit than creatine monohydrate gets on its own [2]. Better uptake on paper isn't the same as a better result in the gym.

Worth noticing: the doses in that study are bigger than what's in a normal shake. AUROM's whey isolate carries 2 g of carbohydrate a scoop, chocolate or vanilla, nowhere near the 47 g used alongside protein in that study. A typical protein-and-creatine shake isn't recreating the exact feeding protocol that produced the 25% number, and that's fine. The shake's job is convenience, not maximizing uptake, and the position stand's own protocol is a plain 3 to 5 g a day, which fills and holds muscle creatine stores whether or not the insulin response gets maximized alongside it [2].

Does the combination actually build more muscle?

The clearest evidence for stacking the two comes from a 10-week trial that split resistance-trained men into three groups: protein alone, protein plus carbohydrate, or that same protein-carbohydrate supplement with creatine added in. The creatine group came out ahead on the outcomes the trial reported: bigger gains in one-rep max strength, more lean body mass, and larger increases in muscle fiber cross-sectional area and contractile protein than either of the other two groups [3].

That's a strong result for creatine, but read it for what it actually shows. The trial didn't include a creatine-only group with no protein, so it can't tell you whether the combination itself is doing something extra beyond what creatine does on its own. What it does show is that creatine keeps working when it's part of a daily protein and carbohydrate routine, which is exactly how most people who take both already drink it.

Does it matter if you take them before or after your workout?

Less than you'd think. A 2022 trial followed 34 collegiate athletes for eight weeks, all of them mixing 25 g of whey protein isolate and 25 g of maltodextrin into every dose, with 23 of them taking 5 g of creatine either within an hour before training or within an hour after, and the remaining 11 taking a maltodextrin placebo. Among those taking creatine, strength and body composition gains came out similar either way, and the researchers found no additional benefit from one timing window over the other [4]. If pre-workout or post-workout both work about the same, the shake you were already going to drink is a perfectly good delivery method. Creatine works by building up a saturated store in muscle over weeks, which is why a plain 3 g a day gets there over about 28 days with no loading at all [2], not by hitting a narrow window on any single day, so there's no clock to beat.

Why AUROM builds both to disappear into the same shake

AUROM's creatine monohydrate is unflavored and one ingredient: micronized creatine monohydrate, 5 g a scoop, nothing else in the tub. Being unflavored and micronized, it has no flavor of its own to fight with whatever else is in your shake. Stir it into a protein shake and there is nothing in the tub to taste.

The whey protein isolate is built on the same idea from the other direction. The ingredient list is whey protein isolate, natural flavors, and stevia extract, in chocolate or vanilla. It is a short list, all of it printed on the label, so you can see exactly what is going into the glass alongside the creatine. It's protein and creatine, side by side in the same glass.

Frequently asked questions

Can you mix creatine and protein powder in the same shake? Yes. There's no known chemical or absorption interaction between the two. In one controlled trial, all 34 participants mixed whey protein and maltodextrin into every dose for eight weeks, and 23 of them added creatine to the same shake; Yes. There's no known chemical or absorption interaction between the two. In one controlled trial, all 34 participants mixed whey protein and maltodextrin into every dose for eight weeks, and 23 of them added creatine to the same shake. Some participants reported mild to moderate stomach symptoms, all of which resolved within the first two weeks; the paper records them without assigning a cause.

Do you need extra carbs for the creatine to work? No. Carbohydrate, or carbohydrate and protein together, appears to modestly raise creatine uptake through an insulin response, but the studies showing that effect used large amounts, and creatine still works and still saturates muscle stores without it. Skipping the carbs doesn't stop it from working.

Does creatine cause stomach upset when it's mixed with protein? Not from the combination itself. The International Society of Sports Nutrition position stand reports that well-controlled studies have not found creatine supplementation to increase the incidence of gastrointestinal upset [2]. If a dose sits badly with you, that's a question about your own creatine dosing rather than something the protein causes or fixes.

Should you take creatine before or after your protein shake? It doesn't need to be either. Since creatine works by accumulating in muscle over weeks rather than acting in a narrow window, taking it with, before, or after your protein shake produces about the same result. Timing your protein shake around your training matters more for protein's own purpose than it does for creatine's.

Do you need to take a bigger creatine dose if you're also taking protein? No. The daily creatine dose that matters is the one that keeps your muscle stores saturated, which the International Society of Sports Nutrition position stand puts at 3 to 5 g a day [2]. Protein doesn't change that number.

Can you take creatine and protein powder on an empty stomach? Generally yes, and plenty of people do it first thing in the morning or right before training. If a large dose of either one bothers your stomach on empty, that's a reason to take it with food, not a reason to separate the two from each other.

The bottom line

Combine them because it's convenient, not because you have to. The uptake research is real, but it was built on doses larger than a single scoop, and better uptake hasn't been shown to beat creatine taken on its own. What the research supports most plainly is the boring part: no interaction anyone has demonstrated, no timing effect in the trial that tested it, no reason to keep them in separate glasses.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.