Contract Drug Manufacturers in San Diego County, CA

We list 144 contract drug manufacturers serving San Diego County, CA: 60 based there and 84 serving it from nearby. 10 of the top 10 match an active federal or state record, checked on 2026-11-04.

The top-ranked contract drug manufacturers serving San Diego County, CA are 1Link LLC dba USA Diagnostix, Airgas USA, LLC, Airgas USA, LLC, Allele Biotechnology & Pharmaceuticals, Inc. and Allermed Laboratories, Inc.. The full ranked list, with the official records each provider matched, is on this page.

10 of the top 10 match an active official record: 1Link LLC dba USA Diagnostix (U.S. Food and Drug Administration), Airgas USA, LLC (U.S. Food and Drug Administration), Airgas USA, LLC (U.S. Food and Drug Administration), Allele Biotechnology & Pharmaceuticals, Inc. (U.S. Food and Drug Administration) and Allermed Laboratories, Inc. (U.S. Food and Drug Administration), and 5 more on this page. Each badge links to the official record it matched.

By our published methodology: verified registrations, documented capabilities, years registered and responsiveness. Sponsored placements are shown separately and never affect rank.

"Verified" means we matched the provider to an active official record on the date shown; each badge links to that record. The absence of a badge only means we have not verified that item.

Facilities that manufacture, prepare or process drugs for the U.S. market must register with FDA every year and list their operations. Registration is not an FDA approval of the facility or its products.