#1 AMF Pharma LLC
Based in Ontario, CA
Call (909) 930-9599 · WebsiteContract Drug Manufacturers in Ontario, CA
The top-ranked contract drug manufacturers serving Ontario, CA are AMF Pharma LLC, Pouches, Inc. and US Merchants Inc.. We list 252 contract drug manufacturers serving Ontario, CA. 30 of the providers shown match an active record from U.S. Food and Drug Administration, checked on the date shown. Rankings follow our published methodology; sponsored placements never change rank.
Contract Drug Manufacturers serving Ontario, CA (San Bernardino County). 252 providers, 10 of the top 10 verified against federal or state records. Registry records checked on 2026-11-04.
Top 10 ranked contract drug manufacturers for Ontario
#2 Pouches, Inc.
Based in Ontario, CACall (909) 923-1135 · Website#3 US Merchants Inc.
Serves this area from Eastvale, CA (3 mi)#4 Nippon Sanso Matheson, Inc.
Serves this area from Rancho Cucamonga, CA (4 mi)#5 Amphastar Pharmaceuticals, Inc.
Serves this area from Rancho Cucamonga, CA (5 mi)Call (909) 980-9484 · Website#6 UPS Supply Chain Solutions, Inc.
Serves this area from Jurupa Valley, CA (5 mi)#7 US Drugs, Inc.
Serves this area from Rancho Cucamonga, CA (5 mi)#8 Innovatical Laboratories LLC
Serves this area from Montclair, CA (5 mi)#9 Exel Inc. dba DHL Supply Chain (USA)
Serves this area from CA#10 Diamond Wipes International, Inc.
Serves this area from Chino, CA (6 mi)
20 more providers serving this area
- Airgas USA, LLC, Rancho Cucamonga, CA (6 mi)
- Paklab, Chino, CA (6 mi)
- Masonhub, Inc, Fontana, CA (6 mi)
- Airgas USA, LLC, Pomona, CA (7 mi)
- Biochem Scientific Laboratory LLC, Upland, CA (7 mi)
- Menasha Packaging Company LLC, Fontana, CA (8 mi)
- United Exchange Corp., CA
- Bimeda Pomona Inc., Pomona, CA (10 mi)
- Respiratory Medical Services, Riverside, CA (10 mi)
- Sterigenics U.S., LLC, Corona, CA (11 mi)
- Arminak Solutions LLC, Corona, CA (11 mi)
- Skya Health, LLC, Corona, CA (11 mi)
- Prostat First Aid, LLC, La Verne, CA (11 mi)
- Gilead Sciences, Inc., La Verne, CA (11 mi)
- BioPharmaDev, Inc., Corona, CA (11 mi)
- KC Pharmaceuticals, Inc., Pomona, CA (11 mi)
- CTK OTC Laboratories, LLC, Corona, CA (12 mi)
- Ethical Nutritional, LLC, Pomona, CA (12 mi)
- Mili Pharmaceuticals, Inc., Corona, CA (13 mi)
- Wellington Foods, Inc., Corona, CA (13 mi)
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Frequently asked questions
How many contract drug manufacturers serve Ontario?
We list 252 contract drug manufacturers serving Ontario, CA: 2 based there and 250 serving it from nearby. 10 of the top 10 match an active federal or state record, checked on 2026-11-04.
Which contract drug manufacturers serve Ontario?
The top-ranked contract drug manufacturers serving Ontario, CA are AMF Pharma LLC, Pouches, Inc., US Merchants Inc., Nippon Sanso Matheson, Inc. and Amphastar Pharmaceuticals, Inc.. The full ranked list, with the official records each provider matched, is on this page.
Which contract drug manufacturers serving Ontario are verified against official records?
10 of the top 10 match an active official record: AMF Pharma LLC (U.S. Food and Drug Administration), Pouches, Inc. (U.S. Food and Drug Administration), US Merchants Inc. (U.S. Food and Drug Administration), Nippon Sanso Matheson, Inc. (U.S. Food and Drug Administration) and Amphastar Pharmaceuticals, Inc. (U.S. Food and Drug Administration), and 5 more on this page. Each badge links to the official record it matched.
How are these companies ranked?
By our published methodology: verified registrations, documented capabilities, years registered and responsiveness. Sponsored placements are shown separately and never affect rank.
What does "Verified" mean on this page?
"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.
What does FDA establishment registration show?
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.
"Verified" means we matched the provider to an active official record on the date shown. The absence of a badge only means we have not verified that item. How we rank and verify. Page updated .