Full List of API Manufacturers in USA (2025)

SK pharmteco Inc.

Gene Therapy:
411 Swedeland Rd #100, King of Prussia,
PA 19406, United States

Small Molecule Manufacturing:
12460 Akron St #100, Rancho Cordova,
CA 95742, United States
Phone: +1 888-330-2232

914 S 16th St
La Porte, Texas 77571, US

Web: https://www.skpharmteco.com/

Smithfield BioScience

12150 Best Pl
Cincinnati, Ohio 45241, US

Tel: 1-800-437-2746
https://www.smithfieldbioscience.com

Specialty Enzymes & Probiotics

4880 Murrieta St,
Chino, CA 91710

Tel: (909) 613-1660
Email: adm@specialtyenzymes.com
https://specialtyenzymes.com

Spectrum Chemical

Corporate Headquarters:
769 Jersey Avenue
New Brunswick, NJ 08901-3605 USA

Packaging & Distribution:
14422 S. San Pedro Street
Gardena, CA 90248-2027 USA

Tel: 1-800-772-8786
Fax: 1.310.516.7512
https://www.spectrumchemical.com

Sterling Pharma Solutions Limited.

1001 Sheldon Drive
Suite 101
Cary
NC 27513
United States
Tel: +1 (919) 678 0702

WI32 N10550 Grant Drive
Germantown
WI 53022
United States
Tel: +1 (262) 251 5044

Web: https://www.sterlingpharmasolutions.com

Tecoland Corporation

4 Venture, Suite 310
Irvine, CA 92618

Tel: +1-949-727-9400
Email: info@tecoland.com
https://tecoland.com

Teva API Inc.

400 Interpace Parkway Building D
Parsippany NJ 07054 USA

Phone +1-9732653600
Fax +1-9732653681
https://tapi.com/

Thermo Fisher Scientific (Patheon)

Active Pharmaceutical Ingredients (API):
6173 East Old Marion Highway
Florence, SC 29506
Phone: +1 843 629 4000

Small Molecule API:
101 Technology Place
Florence, SC 29501

Autologous & Allogeneic Cell Therapies, Viral & non-viral Modified Gene Delivery Systems, & Many cell types:
777 Mariposa St
San Francisco, CA 94107

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Viral Vectors for Gene and Cell Therapy:
250 Binney Street
Cambridge, MA 02142
Phone: +1 781-325-1212

Steriles, Viral Vector Services:
5 Commerce Blvd
Plainville, MA 02762

Biologics:
4766 LaGuardia Drive
St. Louis, MO 63134-3117
Phone: +1 314 426 5000

Web: https://www.patheon.com/us/

Transo-Pharm USA

216 Hazeltine Circle
Blue Bell, PA 19422
USA

Tel.: +1 610 278 9751
Fax: +1 610 278 9761
https://www.transopharm.com/usa.html

Undersun Biomedtech Corp.

17910 E Ajax Circle,
City of Industry, CA 91748

Tel: +16263716327
Email: herbext@undersun.com.cn
https://www.underherb.com

Veranova, L.P.

HQ:
25 Patton Road,
Devens, MA 01434
Phone: +1 978-784-5000

70 Flagship Dr # 1, North Andover,
MA 01845, United States
Phone: +1 978-784-5000

2003 Nolte Dr, Paulsboro,
NJ 08066, United States
Phone: +1 856-689-5201

Web: https://veranova.com/

Viatris Inc.

Robert J. Coury Global Center
1000 Mylan Blvd.
Canonsburg, PA 15317

Tel: 724-514-1800
https://www.viatris.com/