Is BulkSupplements creatine NSF certified?

Partly — 4 of the 5 sizes we track, not all of them. NSF lists a specific set of package sizes against each certificate, and BulkSupplements sells sizes that those listings do not name. Since the certificate is what NSF actually stands behind, we treat a package it does not name as unconfirmed rather than certified.

Package	Named by an NSF listing?	Certificate
100 g	Yes	1796571
250 g	Yes	1796571
500 g	Yes	1676955
1 kg	Yes	1676955
5 kg	Not named	1676955

Why there is more than one answer

BulkSupplements holds 2 separate Certified for Sport listings for this product (1796571, 1676955). NSF records the brand under more than one spelling, so a search on the brand name alone can return one listing and miss another — which is exactly what happened to us, and it is why the table above is built from both.

The 5 kg package is not named by either listing. BulkSupplements' customer service told us in August 2026 that all sizes from 100 g to 5 kg are certified; the certifier's own listings do not say that, and where a seller and a certifier disagree about the certifier's scope we go with the certifier. We have asked NSF directly and will publish the answer.

What each product page shows

Creatine Monohydrate (Micronized) Powder (100 g) A · Certified

NSF listing 1796571 names 100 g, 250 g, 425 g, 500 g and 1 kg. The 100 g package priced here IS among the listed sizes, so certification covers this package. Corrected 2026-08-27: this was previously recorded as scope-unconfirmed against listing 1676955 (500 g and 1 kg only), because our sweep searched by brand name and NSF stores this brand under three spellings, so the second listing was missed. See src-0187.

Creatine Monohydrate (Micronized) Powder (250 g) A · Certified

NSF listing 1796571 names 100 g, 250 g, 425 g, 500 g and 1 kg. The 250 g package priced here IS among the listed sizes, so certification covers this package. Corrected 2026-08-27: this was previously recorded as scope-unconfirmed against listing 1676955 (500 g and 1 kg only), because our sweep searched by brand name and NSF stores this brand under three spellings, so the second listing was missed. See src-0187.

Creatine Monohydrate (Micronized) Powder (500 g) A · Certified

The 500 g package priced here is named by BOTH of this brand's NSF listings — 1676955 (500 g, 1 kg) and 1796571 (100 g, 250 g, 425 g, 500 g, 1 kg) — so certification covers this package. Second listing added 2026-08-27, see src-0187.

Creatine Monohydrate (Micronized) Powder (1000 g) A · Certified

The 1 kg package priced here is named by BOTH of this brand's NSF listings — 1676955 (500 g, 1 kg) and 1796571 (100 g, 250 g, 425 g, 500 g, 1 kg) — so certification covers this package. Second listing added 2026-08-27, see src-0187.

Creatine Monohydrate (Micronized) Powder (5000 g) A? · size unconfirmed

This brand holds TWO NSF listings for this product — 1676955 (500 g, 1 kg) and 1796571 (100 g, 250 g, 425 g, 500 g, 1 kg), both re-read 2026-08-27 — and the 5 kg package priced here is named by neither, so certification scope for this package is unconfirmed. BulkSupplements customer service states all sizes from 100 g to 5 kg are NSF certified (2026-08-27, src-0186); that is the seller characterizing the certifier's scope, and for 5 kg specifically it is not supported by either listing. Note that the brand obtained a second listing in order to add 100 g, 250 g and 425 g — which is what a certifier does when scope is per package, not per formulation. An inquiry with NSF is pending.

Public beta — real data, mostly not yet human-verified. These products, prices and certification listings were collected from NSF's Certified for Sport database, the LGC Informed database, iHerb and BulkSupplements. Every claim links to the source it came from, and you are welcome to check any of them.

Servings per container are derived from net weight rather than read off the label, except where a note on the product says otherwise.
Most source records have not been checked by a person. The ones that have say so.
Amazon and Walmart are not included, so “cheapest” means cheapest among the retailers we track.
Prices go stale. Each one shows when it was last checked, and says so when it is older than the retailer allows us to cache it.

Found something wrong? Tell us — corrections are the point of publishing this early.

Full comparison of every product in this category: Creatine Monohydrate. How these numbers are made: How we compare.