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The 43 largest Pharmaceutical Manufacturing companies in Pennsylvania

Tamtam tracks 43 Pharmaceutical Manufacturing companies headquartered in Pennsylvania. This list ranks all of them by number of employees on LinkedIn, led by Viatris, Mylan and West Pharmaceutical Services. Their median headcount is 473. Half of them were founded in 1993 or later. The most common headquarters are Philadelphia (6), Conshohocken (5) and Horsham (3).

๐Ÿ‡บ๐Ÿ‡ธ Pennsylvania43 companiesUpdated Oct 24, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
Viatrisviatris.com

Global healthcare company providing extensive medicine portfolio and supply chain to deliver high-quality medicines addressing diverse health needs worldwide.

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Pittsburgh 17,886 n/a
2
Mylanviatris.com

Empowering people worldwide to live healthier at every stage of life through a merger with Upjohn, now known as Viatris

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Canonsburg 15,198 n/a
3
West Pharmaceutical Serviceswestpharma.com

provider of high-quality injectable components and devices ensuring safe, effective delivery and containment of medicines worldwide

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Exton 6,268 1923
4
PCI Pharma Servicespci.com

Provides world-class solutions for drug development, manufacturing, advanced drug delivery, clinical trials, and commercial packaging, delivering life-changing therapies globally.

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Philadelphia 4,795 n/a
5
Cencora | Pharma solutionscencora.com

A global pharmaceutical solutions organization partnering with pharma innovators to optimize product potential and improve access to healthcare products

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Conshohocken 2,500 n/a
6
ERTclario.com

Clario is a technology company specializing in clinical endpoint technology and medical imaging, aiming to innovate clinical trials and impact global healthcare positively

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Philadelphia 1,914 1977
7
ClinChoiceclinchoice.com

A global clinical CRO offering high-quality, efficient solutions to clients worldwide in biostatistics, clinical operations, data management, regulatory affairs, and more

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Horsham 1,624 1995
8
Sharp Servicessharpservices.com

Provides commercial packaging, clinical services, and sterile manufacturing for pharmaceutical and biotech clients, covering R&D to market launch globally.

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Allentown 1,506 1993
9
SK pharmtecoskpharmteco.com

Global contract development and manufacturing organization for active pharmaceutical ingredients, advanced intermediates, and cell and gene therapy for the pharmaceutical industry.

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Rancho Cordova 1,433 n/a
10
Lash Grouplashgroup.com

A global pharmaceutical solutions company focused on improving health outcomes by optimizing market access to therapies for people and animals worldwide

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Conshohocken 1,428 n/a
11
Colorconcolorcon.com

Develops, supplies, and supports formulated film coating systems, modified release technologies, core excipients, and functional packaging for the pharmaceutical industry.

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Harleysville 1,228 1961
12
Madrigal Pharmaceuticalsmadrigalpharma.com

Clinical-stage biopharmaceutical company developing novel therapeutics for NASH, focusing on thyroid hormone receptor agonist to target underlying causes in the liver

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Conshohocken 1,133 2016
13
Community Pharmcy

Pharmaceutical company located in Reading, Pennsylvania, providing medications and health services to the community

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Reading 1,100 n/a
14
Red Nucleusrednucleus.com

Global life sciences partner offering expertise and support across the product lifecycle, including scientific services, market access, medical communications, and learning solutions accelerates customer success

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Yardley 876 1991
15
Amplityamplity.com

Global healthcare partner challenging boundaries in medical and commercial strategies to accelerate drug approval and improve patient lives with expertise, infrastructure, and data-driven insights

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Langhorne 840 n/a
16
Minaris Advanced Therapiesminaris.com

Global cell and gene therapy CDMO and biosafety testing provider with deep experience supporting therapeutic programs from IND through commercial supply.

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Tokyo 808 2025
17
PANTHERx Rare Pharmacypantherxrare.com

A pioneering rare disease pharmacy in Pittsburgh, redefining specialty care with innovative RxARECAREโ„ข program and national recognition for excellence

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Pittsburgh 689 2011
18
Touchpoint Solutionsamplity.com

Specializing in customized healthcare sales and service teams, we provide cross-channel solutions including field sales, live video detailing, and clinical health education

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Yardley 668 1987
19
Jubilant Radiopharmajubilantradiopharma.com

Leading pharmaceutical company develops, manufactures, commercializes, and distributes high-quality diagnostic and therapeutic agents for nuclear medicine, improving lives globally.

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Yardley 629 2019
20
Adare Pharma Solutionsadarepharmasolutions.com

providing end-to-end integrated services from product development to commercial manufacturing and packaging with expertise in oral dosage forms and specialized technology platforms.

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Philadelphia 597 n/a
21
Lannett Company, Inc.lannett.com

Manufactures pharmaceuticals, provides end-to-end solutions for clients with deep industry knowledge, focusing on safety, quality, and productivity using in-house talent and capacity.

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Trevose 495 1942
22
PDI, Inc.ph-pdi.com

Outsourced sales marketing expertise delivering multi-channel promotional solutions to pharmaceutical, biotech, medical device, and diagnostics companies.

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Yardley 473 1987
23
Enclara Pharmaciaenclarapharmacia.com

A leading pharmacy services provider for hospice care, offering medication access, clinical expertise, and technology to enhance quality of life

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Philadelphia 462 n/a
24
Accelerated Enrollment Solutionstrialmed.com

AES helps biopharmaceutical companies with patient recruitment and research site challenges, offering global solutions for clinical trial delivery and patient enrollment

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Horsham 424 2019
25
Endo Pharmaceuticalsendo.com

Specializing in high-value branded pharmaceutical products, developing and marketing medications for urology, men's health, orthopedics, and endocrinology

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Malvern 390 n/a
26
Research Pharmaceutical Servicesiconplc.com

Specializing in strategic solutions, our company partners with sponsors to enhance infrastructure, streamline development processes, and provide staff augmentation services

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Fort Washington 383 n/a
27
Myonexmyonex.com

A global clinical trial supply company offering end-to-end services including drug sourcing, packaging, patient solutions, and equipment & supplies GMP and GDP compliant facilities worldwide

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Horsham 359 1987
28
CAPSยฎ (Central Admixture Pharmacy Services, Inc.)capspharmacy.com

Provider of high-quality, same-day admixture services to hospitals and outpatient facilities with industry-leading batch compounding and a focus on safety

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Allentown 356 1991
29
Harmony Biosciencesharmonybiosciences.com

Specializing in treatments for rare neurological diseases, our team of experts combines empathy and innovation to improve lives through therapeutic possibilities

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Plymouth Meeting 341 2017
30
Piramal Critical Carepiramalcriticalcare.com

Provides critical care solutions globally, including inhaled anesthetics, injectable pain relief, anti-infectives, and therapies for rare diseases, manufactured in owned facilities.

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Bethlehem 341 1994
31
M8 Pharmaceuticals, Incacinolatam.com

This company partners with pharmaceutical companies to bring innovative medicines to Latin America through strategic partnerships and comprehensive market optimization services

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Berwyn 332 2007
32
SDIsdihealth.com

A global healthcare information and analytics firm offering services to pharmaceutical manufacturers, payers, providers, policymakers, and researchers for over 55 years

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Plymouth Meeting 330 1982
33
RareMed Solutionsraremed.com

The company simplifies patient access to complex therapies through comprehensive service, breaking down barriers and transforming lives across the nation

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Pittsburgh 275 2015
34
Pharmaron US Lab Servicesabsorption.com

Premier service provider in life sciences industry with broad range of research, development, and manufacturing capabilities for drug discovery and development worldwide

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Exton 186 n/a
35
Xcendaxcenda.com

A strategic consultancy enabling biopharma partners to communicate and deliver brand value to global healthcare stakeholders, driving market access worldwide

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Conshohocken 183 n/a
36
URL Pharma, Inc.urlpharma.com

Specialty pharmaceutical company with expertise in technology development, product manufacturing, and commercialization, transitioning from generic to branded pharmaceuticals successfully

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Philadelphia 176 1946
37
Marinus Pharmamarinuspharma.com

Specializing in the development of innovative therapeutics, this company focuses on treating seizure disorders within the pharmaceutical industry

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Radnor 173 n/a
38
Jubilant Pharma Limitedjubilantpharma.com

Global integrated pharmaceutical company, offering products and services including specialty pharmaceuticals, radiopharmaceuticals, sterile injectables, allergy therapy products, generics, and active pharmaceutical ingredients.

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Yardley 172 n/a
39
Daicel Chiral Technologieschiraltech.com

This company is a global leader in chromatography products for the life sciences industry, providing achiral and chiral stationary phases for analysis and purification

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ West Chester 157 1990
40
JK Associatesjkmed.com

A science-led global medical communications group specializing in designing and implementing scientific and medical education initiatives, partnering with other healthcare agencies worldwide

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Conshohocken 156 2003
41
BioSpectra, Inc.biospectra.us

A US-based manufacturer of GMP pharmaceutical-grade ingredients, specializing in small molecule synthesis, purification, contract product development, and regulatory support

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Bangor 154 1994
42
Frontida BioPharm, Inc.frontidabiopharm.com

Frontida BioPharm is a minority-owned CDMO collaborating with clients to develop pharmaceutical products, leveraging vast experience for improved success

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Philadelphia 57 n/a
43
Vitaeris Inc.csl.com

The company is now part of CSL Behring, indicating a merger or acquisition

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ King of Prussia 4 n/a

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How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 24, 2026.

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