Read about our response to COVID-19

Health Resources

We believe that health information is a universal right and that every person is entitled to accurate, accessible and usable medical information.



We also believe that we have a responsibility to protect, preserve and share the best current medical information to enable better informed decisions, to enhance relationships between patients and professionals, and to improve health care outcomes around the world.

Highlighted below are examples of publications, policies, links and other resources for both patients and health care professionals.

The Manuals

The Manuals, known as the Merck Manuals in the U.S. and Canada and the MSD Manuals in the rest of the world, are among the most widely used medical information resources.

First published in 1899 as a small reference book for physicians and pharmacists, the Manuals have grown in size and scope to become among the world’s most widely used comprehensive medical resources. Over the years, the Manuals have been translated into 17 languages in print, and a consumer version has been published since 1997.

As the Manuals have evolved, they have continually expanded the reach and depth of offerings to reflect the mission of providing the best medical knowledge of the day to a wide cross-section of users, including medical professionals and students, veterinarians and veterinary students and consumers.

As a sign of our deepened commitment to worldwide medical information access, we have made the Manuals available for free in digital form in multiple languages to professionals and patients around the world.

The 20th edition of the Manual is now available in print. Published in April 2018, this new edition boasts 3,584 pages filled with the most up-to-date medical content written by over 350 medical experts. The Manual is one of the most comprehensive medical references and it has been completely revised, redesigned and expanded in this new edition.

Global Medical Knowledge 2020

Our most aggressive and far-reaching mission to make medical knowledge available to date has been the Global Medical Knowledge 2020 initiative. Through this worldwide project, our goal has been to make the best current medical information accessible for more than 3 billion professionals and patients around the world by 2020. We have successfully accomplished this goal by making the Manuals available online for free in 10 languages and as free mobile apps in six languages. Additional languages are planned for release in 2019 and beyond.

Furthermore, we are actively partnering with health care and patient organizations, companies and libraries throughout the world to fulfill our mission and make the Manuals readily accessible to all. The Global Medical Knowledge 2020 initiative is a direct reflection of our company’s broad corporate commitment to addressing unmet medical needs and improving global health.

promo for the MSD Manual Consumer Version of the MSD Manuals
promo for the MSD Manual Professional Version of the MSD Manuals

Consumer engagement program

According to a study published by the New England Journal of Medicine, an estimated one-third to one-half of all patients in the U.S. reportedly do not take their medications as prescribed.1

Twenty to thirty percent of new prescriptions are never filled at the pharmacy, and the majority of patients prescribed medications for chronic diseases have, after six months, taken less medication than prescribed or stopped the medication altogether.2

The following resources are designed to help patients stay on course with their treatments and have better conversations with their health care providers about the medicines they have been prescribed.

Our company’s digital consumer engagement program, a free health-support program intended for consumers in the U.S., offers resources that help consumers achieve their health goals by reinforcing healthy lifestyle choices, providing disease-specific education, supporting adherence to therapy and facilitating more productive interactions with health care professionals. The program also includes support and encouragement for caregivers, who are often engaged in the day-to-day care and treatment decisions of family members and friends.

Elements of the consumer engagement program include:

  • Caregiver Resources
  • Disease-specific support information including articles, slideshows, infographics and quizzes
  • “Getting started” fitness ideas and recipe section
  • A guide to better “Know Your Health Insurance”
  • Low-sodium, low-fat, low-sugar, low-calorie cookbooks are available to download
  • Ability to join our community on social media via Facebook, Twitter, YouTube and Pinterest
  • Program app available on Google Play & Apple App Store
  • Links to product savings coupons and free trial offers

The Adherence Estimator®

Patients often fail to reach clinical goals because they do not take medications as directed. We remain committed to the issue of medication adherence and to helping patients with adherence-related programming and solutions that are scientifically based.

The foundation of our adherence program is the Adherence Estimator®. The Adherence Estimator is a validated, patient-based resource that gauges the likelihood of a patient adhering to a newly prescribed oral medication for certain chronic asymptomatic conditions. The Adherence Estimator asks questions about three key areas of patient perception that affect adherence:

  • Concerns about prescription medication
  • Commitment to a prescription medication
  • Financial burden from the cost of a prescription medication

After respondents answer the questions, the resource provides information to enable the patient and health care provider an opportunity to discuss any concerns that the patient may have. In addition to our outcomes research studies, we continue to explore behavioral and motivational factors that contribute to non-adherence. With this new information, we will build tools and resources that will allow for a deeper conversation between patients and their health care professionals on behavior change to improve medication adherence. And to facilitate the conversation, we are exploring technology to get our adherence tools and resources the ability to integrate into workflow within electronic health records.

Photo of a doctor speaking with a nurse, with a patient in the background


SPARTA is an adherence platform that supports patients on any of our company’s therapies to improve adherence to these medications and provides access to various tools and resources to assist in the management of conditions.

SPARTA was created in Australia in 2009, in partnership with physicians and pharmacists who voiced the need for more robust patient support. In addressing this unmet need, modules were created to support enrolled patients in managing their chronic conditions. The modules consisted of various patient touch points providing telephone support and text/email reminders, remote monitoring, symptom management tools and disease education to help patients understand their condition better, realize the importance of diet and exercise in managing their condition and, ultimately, improve medication adherence.

SPARTA grew from 60,000 patients in Asia-Pacific in 2013 to more than 270,000 patients across the globe in 2018.

In 2019, the program will continue its expansion into the new therapeutic areas of immunology, oncology, hepatitis, HIV, women’s health and insomnia.

SPARTA has been launched in Australia, India, Indonesia, Vietnam, Malaysia, Singapore, Oman, Taiwan, Mexico, United Arab Emirates, Chile, Sweden, Belgium, Switzerland, Ireland and Germany. is a patient-centric website that focuses on providing adults living with type 2 diabetes access to useful and relevant content that will enable them to make small, but significant lifestyle changes to better manage their disease. The site is about the how to do, not the what to know. was launched in the United States in April 2019 to positively impact the diabetes health care epidemic, one community and one patient at a time. In the U.S. alone, 30 million Americans are living with diabetes, most of which have type 2 diabetes (T2D). T2D is a disease that impacts many aspects of daily living, and as such the diagnosis always comes with recommended changes to lifestyle such as changing activity levels and eating habits. These behavioral modifications can be challenging, and often leave patients feeling frustrated, guilty and alone. is designed to offer practical tips and advice that help people make small changes in their lifestyle choices, which can have a big impact on long-term habits. The content is also designed to give people a sense that they’re not alone—by providing stories and perspectives from “people like me” and showing them HOW to live with type 2 diabetes. The program also accounts for cultural nuances across the country by offers relevant content that accounts for social and cultural differences, including a Spanish language version of the website.

Since the site launched, over 5,000 unique visitors have visited and engaged with content—reading on average two articles per visit and sharing content with others.


Univadis® is a comprehensive online medical-information resource from Aptus Health—a wholly owned and independently operated subsidiary of the Company—for health care professionals worldwide.

This Web- and mobile-optimized resource provides high-quality, relevant and trusted medical information essential for health care practice. The site features breaking medical news, accredited education courses and tools tailored by medical specialty and clinician need. Additionally, a point-of-care mobile application is available in key markets.

Over 3.6 million health care professionals are registered members of Univadis, which is available across 63 specialties, 20 languages and 90 geographic markets.

The medical and scientific content comes from independent third parties, such as scientific leaders, educational institutions and medical societies, as well as through partnerships with a range of world-leading medical publishers. Sponsor organizations provide educational funding to expand and augment the site’s core content in adherence with the strict editorial principles of independence, relevance and quality.

With no subscription or registration fees, Univadis provides access to:

  • The latest medical news and clinical developments in 60+ specialist areas
  • Weekly research summaries from major peer-reviewed publications
  • Conference coverage from medical congresses
  • Full online access to trusted medical references
  • A library of thousands of medical images to enrich presentations and research
  • A wide range of resources to enhance interactions with patients at the point of care

Univadis creates unique opportunities for long-term and meaningful partnerships with scientific and health care organizations, in addition to the world-class publishers that our company already works with. Univadis aims to be a valuable partner in building lasting relationships with our 3.6 million individual health care users globally.

1 Osterberg L, Blaschke T. Adherence to medication. N Engl J Med. 2005. Aug 4;353(5):487-97.