Full List of API Manufacturers in USA (2025)

Active Pharmaceutical Ingredient (API) is the biologically active component in a drug formulation which produces the desired medicinal effect.

Though there are a good number of API Manufacturers in USA, foreign sources remain the major source of API for pharmaceutical and biotech companies in the US.

Active Pharmaceutical Ingredient (API) is the biologically active component in a drug formulation which produces the desired medicinal effect. APIs could be Synthetic APIs (produced through chemical synthesis), and Biological or Biotech APIs (medications like insulin, vaccines that are manufactured from living organisms, like proteins, enzymes, and monoclonal antibodies)

Countries like China and India offer cost-effective, large-scale API production, but local API manufacturers in the US offer greater quality and regulatory compliance.

In the US, the FDA (Food and Drug Administration) regulates API manufacturing standards to make sure they comply with Current Good Manufacturing Practices (cGMPs).

List of API Manufacturers in USA

AbbVie Contract Manufacturing

1401 Sheridan Rd
North Chicago, IL 60064
Tel: +1-800-240-1043 (USA)
Tel: +1-847-938-8524 (Outside USA)

AbbVie Bioresearch Center (ABC):
100 Research Dr, Worcester,
MA 01605, United States
Phone: +1 508-849-2500

Small and Large Molecules:
CCMP+83W, Barceloneta 00617, Puerto Rico

Email: abbviecontractmfg@abbvie.com
Web: abbviecontractmfg.com

Actylis

4 Tri Harbor Court Port
Washington, NY 11050

Phone: +1 516-627-6000
Email: info@actylis.com
https://actylis.com/

Agno Pharma

3894 Courtney St, Bethlehem,
PA 18017, United States

Phone: +1 610-861-4701
https://agnopharma.com

Ajinomoto Bio-Pharma Services

3900 Gantz Road
Grove City, OH

Email: hello@forgebiologics.com
https://www.ajibio-pharma.com/

Alchem USA Inc.

2700 Post Oak Blvd,
Suite #1430
Houston, TX 77056
USA

Email: talbert@alchem-usa.com
Tel: (215) 987-7318
Customer care: 1-800-738-7520
https://www.alcheminternational.com

AmbioPharm, Inc.

1024 Dittman Court
North Augusta, SC 29842

Phone: +1 (803) 442-7590
https://www.ambiopharm.com

Amgen

4130 Friendship Rd, Apex,
NC 27539, United States

4150 Ganton Parkway
New Albany, OH 43054
Tel: +1 380-255-3300

40 Technology Way, West Greenwich,
RI 02817, United States
Phone: +1 401-392-1200

Web: https://www.amgen.com

Amneal Pharmaceuticals LLC.

400 Crossing Boulevard, 3rd Floor
Bridgewater, New Jersey 08807

Phone: (908) 947-3120
Fax: (908) 947-3146
https://amneal.com

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Amphastar Pharmaceuticals, Inc.

11570 6th Street
Rancho Cucamonga, CA 91730

Tel: 1-800-423-4136
https://amphastar.com

Antheia

Headquarters:
1430 O’Brien Drive, Suite A
Menlo Park, CA 94025
Media

Email: antheia@missionnorth.com
https://antheia.bio/

APAC Pharmaceutical LLC

6851 Oak Hall Lane, Suite 101,
Columbia, MD 21045

Tel: (410)997-5552;(410)469-0727
Fax: (410)741-3005;(410)309-5955
Email: info@apacpharma.com
https://www.apacpharma.com

API Pharma Tech

Unit# 128, New Jersey Economic Development Authority,
CCIT, 675, US High way one,
North Brunswick, NJ-08902, USA

Tel: +1 (609) 903-5305
https://www.apipharmatech.com

Apeloa Pharma Solutions Co.

35 Dunham Road,
Billerica, MA 01821

Phone: +1-978-294-8129
https://www.apeloa.com

Apicore US LLC

148 Princeton Hightstown Rd
East Windsor, NJ 08520

Phone: (732) 624 – 9041
Fax: (732) 909 – 2017
Email: support@apicore.com
http://apicore.com

Ascensus Specialties LLC

2821 Northup Way
Suite 275
Bellevue, Washington 98004, US

E-mail: ask@ascensusspecialties.com
https://www.ascensusspecialties.com/

AstaTech, Inc.

Keystone Business Park
2525 Pearl Buck Road
Bristol PA, 19007, USA

Phone: 1-215-785-3197
Fax: 1-215-785-2656
https://www.astatechinc.com

Asymchem Inc.

10 Gill Street
Suite J
Woburn, MA 01801 USA
Tel: +1 (781) 896-3998

600 Airport Blvd, Suite 1000
Morrisville, NC 27560 USA
Tel: +1-919-897-8807

Email: services@asymchemdirect.com
https://www.asymchem.com

Aurobindo Pharma USA Inc.

279 Princeton Hightstown Road
East Windsor, NJ 08520

Tel: 866.850.2876
Fax: (732) 355-9449
Email: CustomerService@AurobindoUSA.com
https://www.aurobindousa.com