***This very large app (the entire content of the Merck Manual) can take 5 to 10 minutes on wifi to download and install in 64-bit devices. 32-bit devices may take longer.***

The amount of clinical information currently doubles every 18 months and the pace is only getting faster. Stay ahead of the curve with the Merck Manual Professional App.

The completely redesigned Merck Manual Professional App improves on the trusted Merck Manual app. This useful medical reference app still provides health care practitioners and students with clear, practical explanations for thousands of conditions in all major medical and surgical specialties. It covers etiology, pathophysiology, and options for evaluation and treatment. Now with many new features and enhancements.

The trusted Merck Manual Professional medical app offers:

• Thousands of topics written and updated regularly by more than 350 academic physicians
• Photos and Illustrations of thousands of disorders and diseases
• NEW ”How to Do” Videos on numerous outpatient procedures and physical examinations. Concise instructional videos by medical experts on these key topics:
o Casting and splinting techniques
o Orthopedic examinations
o Neurologic examinations
o Obstetric procedures
o Outpatient procedures (including IV lines, tubes, catheters, dislocation reductions and more)
• NEW Drug Reference Information*
• NEW Quizzes* check knowledge of medical disorders, symptoms, and treatments
• NEW Interactive Case Simulations* test ability to treat a specific patient over the disease course
• NEW Medical News* covering the most current and important medical topics
• NEW Editorials* written by top medical experts
*Internet access needed.

About Merck Manuals
Our mission is simple:
We believe that health information is a universal right and that every person is entitled to accurate, accessible and usable medical information. We have a responsibility to protect, preserve and share the best current medical information to enable more informed decisions, enhance relationships between patients and professionals, and improve health care outcomes around the world.
That’s why we are making the Merck Manuals available for free in digital form to professionals and patients around the world. No registration or subscription required, and no ads.
NOND-1179303-0001 04/16
This mobile application is intended for Healthcare Professionals in the United States, Canada, its territories and Puerto Rico only.
For more information please read the End User License Agreement at
For more information about our privacy practices, please see our privacy commitment at
To report an adverse event with a specific Merck product, please call the Merck National Service Center at 1-800-672-6372.

For questions or help with the app, please contact

What's New

Version 2.4.4

• App and Video downloads can now be done in background mode
• Faster Sync and loading of Medical Topics pages
• Improved Search functionality and topic navigation
• Secured App URL can now be shared on Social Media
• Ability to navigate the Medical Topics from Videos
• Download and update issue fixed
• This app is also available for 32-bit devices, but may take considerably longer to download

Ratings and Reviews

4.1 out of 5

17 Ratings

17 Ratings



To have a resource as renowned & respected as the Merck Manual at my fingertips via this app; is tremendously reassuring. The quality of care I can provide is improved when someone presents with unusual / rare signs & symptoms and my mind &/or my body is tired and a decision I'm going to suggest for a patient lacks that good gut feeling,"... this is the right path." Of course, I still present my assessments to a superior... but, in the future, I will be that senior clinician.
A resource such as this is precious, because it allows me to give my best to every person who presents to me for care.
Even though our hours "on the wards" during the years of internship, residency & fellowship have improved (compared to what they were 10 years & earlier) YET the total hours are still quite long when you recall the time that must be dedicated in preparation for clinical seminars, going on Rounds with Attendings, and more. So there will always be tired physicians and surgeons in training, thanks again for this great resource of information.

iPhone 5 Updates Compatibility


I have an iPhone 5 and everyday I am prompted to update this app, but upon doing so, the updater asks for me to download a previous version instead. Every single day! Can you please address this issue by either releasing a version that works with iPhone 5 or check the device first and offer an appropriate update? The current situation is very annoying.

Indispensable for clinicians


Succinct and comprehensive. My go to for disease state overviews, calculations, and diagnostics. Great on iPad. 5 stars


Merck & Co Inc
32.4 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
You must be at least 17 years old to download this app.
Frequent/Intense Medical/Treatment Information
Infrequent/Mild Sexual Content and Nudity
Infrequent/Mild Alcohol, Tobacco, or Drug Use or References
Infrequent/Mild Mature/Suggestive Themes
Copyright © 2017 Merck Sharp & Dohme Corp., a subsidiary of Merck & Co., Inc. All rights reserved.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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