iPhone Screenshots


Warfarin Guide offers three resources essential for systematic and careful evidence-based anticoagulation with Warfarin. First it reviews the latest recommendations on indications, INR targets, and treatment duration from the American College of Chest Physicians 8th Edition guidelines on Antithrombotic and Thrombolytic Therapy from 2008, updated for the 2012 guideline. Second it offers a protocol for Warfarin dose adjustment depending upon INR result. And third is a discussion of protocols for the initiation of Warfarin. These resources come from point of care guides on these topics in the family medicine literature as well as the 2012 ACCP guideline. The app also alludes to guidance for management of peri-operative Warfarin by directing the user to our PreOpEval iPhone app.
The app addresses such common questions as:
•how long do I treat with Warfarin after a first DVT?
•which artificial heart valves require that higher level of anticoagulation?
•how do I respond to an INR of 7.4?
•this pt needs Warfarin, how do I get it started?
•how long do I anticoagulate with Warfarin for A-fib before a planned cardioversion attempt?
•when do I give Vitamin K to reverse Warfarin anticoagulation and at what dose??
This app is written and intended for practicing clinicians involved in Warfarin anticoagulation such as internists, cardiologists, family physicians, nurses, pharmacists, PA's and NP's; for resident physician trainees; and for medical students. As an educator and clinician, I am interested in feedback and I would be grateful for guidance on improving the tool.

What’s New

Version 2.1

works on iOS 8!

Ratings and Reviews

IngoR ,


I guess I should have looked into it a bit more before getting app. All very easily found information. INR range for Mechanical Mitral Valve is incorrect. It changed from 2.5-3.5 to 3.0-3.5 in early 2014, or before. Working off the incorrect range, when looking at adjusting the dosage, it suggests a 5% - 10% dosage increase if my INR is as low as 1.5! That makes no sense.

Medstud77 ,

Great app! All docs should have

Provides references to national guidelines/recs and easy to use.

gimme_a_martini ,

Dr. Steinberg does it again

Another fabulous reference app! I also use his apps for ABGs and pneumonia. Very quick, to the point app. All of his apps compliment my critical thinking skills as I work towards my Nurse Practitioner certification. I would love to see a heparin app as well.


Joshua D. steinberg
729.1 KB

Requires iOS 7.0 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
© 2014 Joshua Steinberg MD and HeeRak Kang MSII


  • Family Sharing

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

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