MedisourceRx
FDA 503B outsourcing facility
Los Alamitos, California
Key Takeaways
- FDA-registered 503B outsourcing facility since 2017
- Sterile compounding from bulk substances: Yes
- Last FDA inspection: June 10, 2025
- FDA action: Warning Letter Issued 12/12/2025
About this facility
A 503B outsourcing facility is registered with the FDA under the Drug Quality and Security Act and may compound sterile medications in bulk without patient-specific prescriptions, under cGMP manufacturing standards. How federal compounding status works.
FDA registration and inspection record
- First registered with FDA
- February 14, 2017
- Most recent registration
- January 2, 2026
- Compounds sterile drugs from bulk substances
- Yes
- Last FDA inspection
- June 10, 2025
The FDA last inspected MedisourceRx on June 10, 2025. Investigators issued a Form FDA 483 listing inspectional observations at that visit. FDA action on record: Warning Letter Issued 12/12/2025.
What this facility compounds
MedisourceRx reports compounding 3 distinct active ingredients to the FDA Outsourcing Facility Product Report (most recent reporting periods).
Tracked on PeptideGrids: Glutathione, Semaglutide.
- Glutathione
- Methylcobalamin
- Semaglutide
Location
10525 Humbolt St, Los Alamitos, CA 90720
Satellite and street imagery via Esri. Open larger map.
Contact
FDA-registered contact: Venus Firouzehee, 1-714-455-1300. Source: the facility's FDA outsourcing registration.
License verification
503B outsourcing facilities are also licensed by the state board of pharmacy. Verify the current license status of MedisourceRx with the California State Board of Pharmacy.
503B facilities in California
California has 7 FDA-registered 503B outsourcing facilities in the PeptideGrids directory. See all 503B facilities in California.
Frequently asked questions
Is MedisourceRx registered with the FDA?
Yes. MedisourceRx is a registered 503B outsourcing facility, first registered with the FDA on February 14, 2017 and most recently registered on January 2, 2026.
Has MedisourceRx been inspected by the FDA?
The FDA last inspected MedisourceRx on June 10, 2025. A Form FDA 483 was issued. FDA action on record: Warning Letter Issued 12/12/2025.
Has MedisourceRx had any FDA drug recalls?
No FDA drug recalls are matched to MedisourceRx in the openFDA enforcement database.
What does MedisourceRx compound?
MedisourceRx reports compounding 3 active ingredients to the FDA, including Glutathione, Semaglutide.
Where is MedisourceRx located?
MedisourceRx is located in Los Alamitos, California (10525 Humbolt St).
Registration and inspection data verified against the FDA list of registered outsourcing facilities on June 6, 2026.
PeptideGrids is independent and not affiliated with, endorsed by, or sponsored by MedisourceRx. Listings, registration, inspection, and recall data are reported from public FDA records for informational purposes only. A recall or inspection finding is not an accusation of current wrongdoing. This is not medical or legal advice. To request a correction, see our corrections policy.