Manufacturing & Supply

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We are one company, but we operate under two different corporate brand names. We are known as Merck & Co., Inc., Rahway, New Jersey, USA in the United States, Canada & Puerto Rico. We are known as MSD everywhere else.
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Job spotlights in Manufacturing & Supply

Supply Chain

Our Supply Chain teams ensures inventory is consistently available to meet customer demand. We coordinate all aspects of supply through supply planning, sourcing, making, inventory management, packaging, and delivery. We partner across marketing, finance, and manufacturing organizations to build a robust supply and demand plan and ensure we get products to the right customer, at the place, at the right time.

Manufacturing & Quality Assurance

Our Manufacturing & Quality Assurance teams collaborate to ensure we consistently produce safe, high-quality products. Partnering across our internal manufacturing facilities, external contract manufacturers, and suppliers, we create an interdependent global manufacturing network committed to deliver a compliant, reliable supply to customers and patients on time, every time, across the globe.

Engineering

Our Engineers help internal and external manufacturing operations remain operational, continuously improving and innovating. With our extensive range of facilities and environments, our Engineers have opportunities across many diverse areas including biological, chemical, automation, capital projects, maintenance, safety, process development, technical services, utilities, and validation.

Manufacturing Operations

Our Manufacturing Operations teams are the people that make our products. We work in the manufacturing plants with a “Safety First, Quality Always” mindset striving for continuous improvement. We work in the local plant connected to our global manufacturing network to ensure the highest quality of raw materials, intermediates, and finished products.

Environment, Health & Safety

Only the highest standards of safety and quality will do when you manufacture and distribute medicines, vaccines, and biological products for use on a worldwide scale. Our Environmental, Health & Safety (EHS) teams achieve these goals through our global systems, which ensure consistency and exceed the compliance criteria of EHS Standards.

Corporate responsibility

Learn more about ESG with our Company

Reporting on our commitment to society, people and communities around the world

Merck for Mothers

An initiative to create a world where no woman has to die giving life

About Merck

Merck Animal Health

The global animal health business unit of Merck

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Copyright © 2025 Merck & Co., Inc., Rahway, NJ, USA and its affiliates. All rights reserved.

Forward-Looking Statement

Forward-Looking Statement of Merck & Co., Inc., Kenilworth, NJ, USA

This website of Merck & Co., Inc., Kenilworth, NJ, USA (the “company”) includes “forward-looking statements” within the meaning of the safe harbor provisions of the United States Private Securities Litigation Reform Act of 1995. These statements are based upon the current beliefs and expectations of the company’s management and are subject to significant risks and uncertainties. There can be no guarantees with respect to pipeline products that the products will receive the necessary regulatory approvals or that they will prove to be commercially successful. If underlying assumptions prove inaccurate or risks or uncertainties materialize, actual results may differ materially from those set forth in the forward-looking statements.

Risks and uncertainties include, but are not limited to, general industry conditions and competition; general economic factors, including interest rate and currency exchange rate fluctuations; the impact of pharmaceutical industry regulation and healthcare legislation in the United States and internationally; global trends toward healthcare cost containment; technological advances, new products and patents attained by competitors; challenges inherent in new product development, including obtaining regulatory approval; the company’s ability to accurately predict future market conditions; manufacturing difficulties or delays; financial instability of international economies and sovereign risk; dependence on the effectiveness of the company’s patents and other protections for innovative products; and the exposure to litigation, including patent litigation, and/or regulatory actions.

The company undertakes no obligation to publicly update any forward-looking statement, whether as a result of new information, future events or otherwise. Additional factors that could cause results to differ materially from those described in the forward-looking statements can be found in the company’s 2015 Annual Report on Form 10-K and the company’s other filings with the Securities and Exchange Commission (SEC) available at the SEC’s Internet site (www.sec.gov).

No Duty to Update

The information contained in this website was current as of the date presented. The company assumes no duty to update the information to reflect subsequent developments. Consequently, the company will not update the information contained in the website and investors should not rely upon the information as current or accurate after the presentation date.

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By continuing, you will be directed to a site intended only for residents of the United States and Canada. We are called MSD everywhere, except in the United States and Canada where we are known as Merck & Co Inc, Rahway, NJ USA.

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