Best creatine supplements: NSF-certified picks, label checked

We ranked by third-party testing, then form, then dose.

Third-party testing. A product had to appear on NSF's public listing for its NSF/ANSI Standard 173 dietary supplement program when we read it on November 3, 2026. NSF's listing returned 386 rows with "creatine" in the product name that day, 199 of them gummies.

Form. Plain creatine monohydrate first. The NIH Office of Dietary Supplements calls monohydrate the most widely used and studied form, and says other, usually more expensive forms (creatine ethyl ester, creatine alpha-ketoglutarate, buffered creatine) have not been proven better for raising muscle creatine, digestibility, stability or safety.

Dose. 3 to 5 g per serving, the maintenance range NIH describes. A product that needs several scoops to reach it, or buries creatine inside a blend, ranks lower.

To make the shortlist a product also needed a current label in NIH's Dietary Supplement Label Database (DSLD) that we could match to the same NSF row, so we could read the dose and the other ingredients from the label record rather than from an advertisement. We show widely sold brands that pass. Many more NSF-listed monohydrate powders exist; leaving one off is not a mark against it.

No product on this page pays us, and none of the product links below is an affiliate link. Each row links to two public records instead: the product's row on NSF's certified supplement listing, and its label in the National Institutes of Health (NIH) Dietary Supplement Label Database. How to read both yourself is in how to check whether a supplement is third-party tested.

On all three tests these five tie: all are NSF-listed, all are plain monohydrate, and all label 5 g per scoop with nothing else in it, apart from Thorne's stick-pack version, whose separate label lists silicon dioxide (DSLD 336362). Anything that separates them, such as price, tub size, how finely it is milled or how it dissolves, is not something a certification record can tell you, and we have not verified any price.

USP Verified: not checked. USP runs a separate verification program. Its public lookup refused our automated requests on November 3, 2026, so we did not check any product against it. "Not checked" in the table means we did not look. It does not mean a product failed.

For short, hard efforts, yes. NIH's fact sheet describes creatine as one of the most thoroughly studied supplements, with trials generally showing a benefit for high-intensity, intermittent activity such as sprinting and weight lifting, and little value for endurance sports such as distance running or swimming. Individual responses vary, and NIH notes that vegetarians, who start with less creatine in muscle, might respond more.

For older adults the relevant evidence pairs creatine with strength training. A 2017 meta-analysis of 22 randomized trials in 721 adults with mean ages of 57 to 70 found 1.37 kg more lean tissue (95% CI 0.97 to 1.76) and greater chest press and leg press strength with creatine than with placebo, when both groups trained two or three days a week. Our guide does creatine help muscle after 50? reads that evidence in full, including which reviews were written by authors with ties to creatine makers.

NIH describes two approaches. The classic one is a loading phase of 20 g a day, taken as four 5 g portions for 5 to 7 days, followed by 3 to 5 g a day. The other is about 3 to 6 g a day with no loading, which takes 3 to 4 weeks to produce the same effect. Loading gets you there faster; it does not get you somewhere different.

Creatine monohydrate is 88% creatine by weight, per NIH, so a 5 g scoop of monohydrate delivers about 4.4 g of creatine itself. That is our arithmetic on NIH's figure, and it is already built into the doses the trials used.

The site's protein after 40 guide covers the other half of the muscle question: creatine is studied alongside training and adequate protein, not instead of them.

NIH reports no consistent set of side effects except weight gain, typically 1 to 2 kg in a month of strength training, from water retention and possibly muscle growth. Anecdotal reports include nausea, diarrhea, muscle cramps and heat intolerance. NIH considers creatine safe for short-term use by healthy adults and cites evidence that use for several years is safe.

Two things matter more at 35 to 65 than at 20. First, creatine is broken down into creatinine, which leaves through the kidneys, and creatinine is what labs use to estimate kidney function. A review of creatine studies found no rise in serum creatinine in 12, a rise that stayed within the normal range in 8, and a rise above normal limits in only 2. Tell whoever orders your blood work that you take creatine; high creatinine is not always kidney damage explains why. Second, if you already have reduced kidney function, talk with your clinician before starting.

The hair-loss worry comes from one 2009 study of 20 rugby players. A 2025 trial that measured hair directly found no difference from placebo. We read both in does creatine cause hair loss?