Find GMP-certified supplement manufacturers

Every listing is checked against public certification registries and shows the date we checked it. Listing is free; paid placements are labelled.

Or browse powder, capsule, tablet and softgel manufacturers, or all of them.

Browse by dosage form

Counts are companies whose certified facilities list that dosage form. One company can make several.

“Verified” on this site means one thing: we found the company on a certifier’s public listing, on the date shown.

Step 1
Read the public registry
We read NSF’s public NSF/ANSI 455 GMP listing, facility by facility, including each facility’s certified product categories.
Step 2
Match facilities to companies
Facilities are grouped under the company that holds the certification. Where a partner operates the facility, the profile says so.
Step 3
Date every check
Each profile shows when we last checked (latest: Oct 5, 2026). Status can change between checks, so confirm with the certifier before you sign.