About 13,000 searches a month ask about Costco and creatine, and the first thing to know is that the question has no single answer. Costco does not sell a creatine of its own. There is no Kirkland Signature creatine on costco.com, so "Costco creatine" means whatever other brands Costco is stocking that week. This page lists them and reads each one's label, claims and price on a stated date.
Costco's own search page sits behind bot protection and was not pushed past. The products were found through a search engine's index of costco.com on 2026-10-03, and each product page, which opens normally and carries its own structured product data, was read on 2026-10-04. This page tests nothing and puts the products in no order of preference.
The six products, per gram of creatine
Read from each costco.com product page on 2026-10-04 (online prices; warehouse prices may differ):
| Product (Costco item) | Size | Price | Creatine per serving | Per gram of creatine |
|---|---|---|---|---|
| Orgain Micronized Creatine Monohydrate, Unflavored (4000373637) | 23.8 oz (675 g) | $21.99 | 5 g monohydrate | $0.033 |
| Sports Research Creatine Monohydrate, veggie capsules (4201011387) | 240 capsules | $29.99 | 5 g in 4 capsules | $0.100 |
| KAGED Creatine Monohydrate + MaxCatalyst stick packs (4201035734) | 40 sticks | $19.99 | 5 g monohydrate | $0.100 |
| Zena Creatine Gummies + D3/K2, variety pack (4201002645) | count not stated on the listing | $39.99 | 5 g in 4 gummies | not calculable |
| CON-CRET Creatine HCl powder, Lemon Lime (4000331780) | 2 × 1.62 oz | $26.99 | 750 mg creatine HCl per scoop | ≈ $0.48 (estimate) |
| Orgain Collagen + Creatine, Unflavored (4000348947) | 1.95 lb | $32.99 | 5 g monohydrate + 20 g collagen peptides | not calculable |
The spread between the cheapest and the most expensive gram of creatine is roughly fifteen-fold. The CON-CRET figure is an estimate and the working is below. Every product page answered "out of stock" to a request without a delivery postcode. That is availability by location, not a sold-out product, and this page does not report stock.
Product by product
Orgain Micronized Creatine Monohydrate. The costco.com title adds "Banned Substance Tested" and the listing carries a limit of six per member. The tub is 23.8 oz, or 675 g, the same size as the Orgain label recorded in the NIH Dietary Supplement Label Database (DSLD 336391, entered 2025-08-22): 135 servings of 5 g, with directions to take one scoop "four (4) times throughout the day", or 20 g a day with no end date. Orgain's own store now says 5 g a day. The full record, including the Informed Choice claim the register would not let this site check, is on Orgain creatine.
Sports Research Creatine Monohydrate capsules. Four capsules provide 5 g of micronized creatine, so a 240-capsule bottle is 60 servings and 300 g of creatine. The costco.com description names "Informed Sport, Non-GMO project Verified and Certified Vegan" and "Manufactured in the USA". NSF's Certified for Sport register, read on 2026-10-04, lists two Sports Research creatine products, Creapure® Creatine Monohydrate Unflavored and Creatine Monohydrate Unflavored. Both are powders, not the capsules Costco sells. The capsule format's trade-offs are on creatine pills vs powder.
KAGED Creatine Monohydrate + MaxCatalyst. Each stick is 5 g of creatine monohydrate. Costco's 40 sticks cost about $0.100 per gram of creatine; KAGED's own store, read the same day, sold a 25-stick box for $22.99, about $0.184 per gram. KAGED's page describes MaxCatalyst as "a patented black pepper extract" that "shields creatine from metabolizing enzymes" and claims "~40% increase in absorption". A PubMed search on 2026-10-04 for creatine in the title together with piperine, Piper nigrum or BioPerine returned 0 records, so the figure has no peer-reviewed paper in that index to check it against. KAGED's page also says "every batch is independently verified by Informed Sport". The Informed Sport register answered an automated request on 2026-10-04 with a bot check (HTTP 403), so the claim is reported as KAGED's. Its directions offer a loading option of four sticks a day for four to five days, or one stick a day, noting it "can take up to 28 days" to build up.
Zena Creatine Gummies + D3/K2. The listing gives four gummies daily for 5 g of micronized creatine monohydrate, 125 mcg of vitamin D3 and 100 mcg of vitamin K2. At 40 IU per microgram, 125 mcg is 5,000 IU. The Institute of Medicine's 2011 dietary reference intakes set the tolerable upper intake level for vitamin D at 4,000 IU a day for ages 9 and older (Ross et al., 2011, PMC3046611). One day's serving of these gummies is 125% of that level before any other vitamin D source. The listing's warning names pregnancy, nursing and medication, "especially blood thinners", which is the vitamin K2. Zena's store calls the gummies "quality tested" and names no certifier. The gummy format's own record, an HPLC survey in which half of 12 brands missed their label claim, is on the creatine gummy evidence page; Zena was not among the 12.
CON-CRET Creatine HCl. This is creatine hydrochloride, not monohydrate. The costco.com title adds "High Absorption Rate, No Side Effects, USA Made". The listing states no serving size or servings per jar. The nearest label on record is CON-CRET's 2024 Lemon-Lime in the NIH database (DSLD 302161, a 2.2 oz jar, now marked off-market): 750 mg of creatine hydrochloride per 960 mg scoop, 64 servings, directions of "1 serving (1 scoop) per 100 pounds of body weight" for normal training and one to two per 100 lb for intense training. The arithmetic, labelled as such:
- Creatine is 131.13 g/mol and creatine hydrochloride 167.59 g/mol, so 750 mg of the salt carries about 587 mg of creatine.
- For a 200 lb person, the normal-training direction is two scoops, about 1.2 g of creatine a day. In the muscle-biopsy study most dose advice traces to, 3 g a day of monohydrate took about 28 days to reach the level a loading week reaches (Hultman et al., 1996); 1.2 g is under half of that. The trial amounts are compared on how much creatine the trials used.
- Assuming the 2024 label's 960 mg scoop, the two 1.62 oz jars hold about 96 scoops and about 56 g of creatine, or about $0.48 per gram of creatine. That is roughly fifteen times the Orgain tub.
The 2024 label states CON-CRET "complies with all drug and doping control standards" and is "permissible for use by college student athletes", and names no certifier; NSF lists no CON-CRET product in either of its registers. Whether hydrochloride needs less creatine to do the same job is the question on creatine monohydrate vs HCl. The 2024 gummy survey named a Con-Cret gummy as missing its label claim. That is a different product from the powder Costco lists.
Orgain Collagen + Creatine. The listing states 20 g of grass-fed collagen peptides and 5 g of micronized creatine monohydrate per serving, with no added sugar. It gives neither serving size nor servings per tub, so no per-gram figure is possible. What pairing the two does and does not add is on creatine and collagen peptides.
Certification, side by side
| Product | Claim on costco.com or the brand's page | What could be checked, 2026-10-04 |
|---|---|---|
| Orgain powder | "Banned Substance Tested"; Informed Choice (brand store) | NSF Certified for Sport: none. Informed Choice: not readable by automated request (2026-10-02) |
| Sports Research capsules | Informed Sport | NSF Certified for Sport: two Sports Research creatine powders listed, not the capsules. Informed Sport: bot check |
| KAGED sticks | Informed Sport, "every batch" | NSF: none. Informed Sport: bot check (HTTP 403) |
| Zena gummies | "quality tested" | No certifier named. NSF: none |
| CON-CRET | doping-control compliance (2024 label) | No certifier named. NSF: none |
| Orgain Collagen + Creatine | none beyond the ingredient claims | NSF: none |
Informed Sport and NSF Certified for Sport are both lot-based banned-substance programmes. A brand-level claim does not show which lots were tested, which is the detail this site's Thorne creatine page found NSF publishes.
What the shelf leaves out
- A Costco-branded creatine. There is none, so no Kirkland label exists to read.
- Serving counts for the Zena gummies, the CON-CRET jars and the Orgain blend, which is why their cost per gram cannot be read off the listing.
- The source of the creatine, on every listing: none of the six names a manufacturer or raw-material supplier, though Sports Research's NSF listing includes a Creapure powder.
- Warehouse prices and stock, which vary by location and are not on costco.com.
Where it sits in the series
The brand-by-brand record, in alphabetical order, is on creatine brands. For the forms on this shelf (monohydrate, hydrochloride, gummies, capsules), see the guide to monohydrate, salts and other forms.
Limits of this page
The product list is what a search engine had indexed from costco.com on 2026-10-03, and each page was read on 2026-10-04. Costco changes its online range often and its warehouses carry products and prices the website does not. The CON-CRET figures rest on a 2024 label for a different jar size. No product was bought or tested.
Sources and dates
- costco.com product pages, read 2026-10-04 (name, item number, price, description, specifications): Orgain creatine 1.48 lb, Sports Research capsules, KAGED sticks, Zena gummies, CON-CRET HCl, Orgain Collagen + Creatine. Product URLs found through a search engine's index of costco.com, 2026-10-03.
- NIH Dietary Supplement Label Database, read via the DSLD API 2026-10-04: Orgain Creatine Unflavored, 336391; Con-Cret Lemon-Lime, 302161.
- KAGED, Creatine Monohydrate Stick Box, read 2026-10-04: price, MaxCatalyst and Informed Sport claims, directions. Zena Nutrition store product feed, read 2026-10-04.
- NSF Certified for Sport, full register listing, and NSF/ANSI 173 listing searches (KAGED, Orgain, Sports Research, Zena, CON-CRET), read 2026-10-04.
- Informed Sport register, search for KAGED, requested 2026-10-04 → bot check (HTTP 403), not read.
- PubMed, search
creatine[ti] AND (piperine OR "piper nigrum" OR bioperine), 2026-10-04: 0 records. - Hultman E et al. Muscle creatine loading in men. J Appl Physiol 1996;81:232–7, PMID 8828669.
- Ross AC et al. The 2011 report on dietary reference intakes for calcium and vitamin D from the Institute of Medicine. J Clin Endocrinol Metab 2011;96:53–8, PMC3046611 (UL 4,000 IU/day, ages 9+).