What is Warfarin?

Category: Prescription Drugs

Most popular types: Coumadin Marevan Jantoven Show all

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Warfarin is an an anticoagulant used to prevent and treat venous and pulmonary clotting disorders; for clotting complications arising from atrial fibrillation or cardiac valve replacement; and to reduce the risk of stroke and recurrent myocardial infarction (MI).

Reported purpose & perceived effectiveness
Purpose Patients Evaluations Perceived Effectiveness
Deep vein thrombosis 144 57
Prevent blood clotting 125 44
Atrial fibrillation 69 30
Blood clot 69 20
Antiphospholipid antibody syndrome 61 23
Pulmonary embolism 46 21

Show all 47 reasons taken


  • Major
  • Moderate
  • Slight
  • None
  • Can't tell

Side effects

Side effects as an overall problem

Side effects as an overall problem
Severity Evaluations Percentage
Severe 19
Moderate 33
Mild 48
None 92

Commonly reported side effects and conditions associated with Warfarin

Side effect Patients Percentage
Bruising 31
Bleed easily 8
Hair loss 6
Bleeding (hemorrhage) 4
Nausea 4
Nosebleeds (epistaxis) 4

Show all 41 reported side effects

Dosages

Based on patients currently taking Warfarin

Dosage Patients Percentage
5 mg daily 11
4 mg daily 5
7.5 mg daily 5
6 mg daily 4
10 mg daily 4
2 mg daily 2
5 mg m,w,f 2
3 mg daily 2
2.5 mg m,w,f 1
2.5 mg daily 1

See all 15 dosages

Why patients stopped taking Warfarin

Multiple reasons could be selected

Reason Patients Percentage
Doctor's advice 58
Course of treatment ended 54
Other 19
Side effects too severe 19
Did not seem to work 7
Personal research 3
Change in health plan coverage 1
Expense 1
See all 132 patients who've stopped taking Warfarin

Duration

Currently taking Warfarin

Duration Patients Percentage
Less than 1 month 1
6 months - 1 year 1
1 - 2 years 2
2 - 5 years 12
5 - 10 years 10
10 years or more 18

Stopped taking Warfarin

Duration Patients Percentage
Less than 1 month 7
1 - 6 months 44
6 months - 1 year 28
1 - 2 years 19
2 - 5 years 14
5 - 10 years 13
10 years or more 7
Adherence
Adherence Evaluations Percentage
Always 176
Usually 10
Sometimes 2
Never taken as prescribed 4
Burden
Burden Evaluations Percentage
Very hard to take 9
Somewhat hard to take 28
A little hard to take 33
Not at all hard to take 122
Cost per month
Cost per month Evaluations Percentage
$200+ 0
$100-199 2
$50-99 0
$25-49 8
< $25 103
Not specified 79

What people switch to and from

Patients started taking Warfarin after stopping:

Treatment Patients Percentage
Enoxaparin (Lovenox) 9
Rivaroxaban (Xarelto) 9
Heparin 6
Apixaban (Eliquis) 3
Acenocoumarol (Sintrom) 1

Show all 11 treatments patients report switching from

Patients stopped taking Warfarin and switched to:

Treatment Patients Percentage
Rivaroxaban (Xarelto) 8
Apixaban (Eliquis) 4
Enoxaparin (Lovenox) 4
Heparin 3
Acenocoumarol (Sintrom) 2

Show all 9 treatments patients report switching to

Last updated:

24 patient evaluations for Warfarin

May 2, 2017 (Started Mar 11, 2012)

  • Effectiveness
    Major (for Prevent blood clotting)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    Somewhat hard to take
Dosage: 5 mg Daily
Cost: < $25 monthly

  • 0 helpful marks

Sep 12, 2016 (Started Sep 10, 2008)

  • Effectiveness
    Moderate (for factor V Leiden)
  • Effectiveness
    Major (for pulmonary embolism)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 7.5 mg Daily
Advice & Tips: If your Dr. (usually a Cardiologist) puts you on this following an episode of finding a clot, BE SURE TO GET THEM TO DO A PROTEIN C & S TEST for Hereditary blood clotting disorder. I DO have the Hypercoaguability disorder because blood clots killed a large number of folks in my mother's family. I'll be on it for the rest of my life. AND be careful of how much greens you eat, especially kale and spinach and if you are a traveler on airplanes or sit a long time, be sure to get up and walk around every 1 to 2 hours! The circulation in your legs is critical for this. Also, drinking cranberry juice can also affect your INR rate. So be careful with that as well.
Cost: < $25 monthly
Side effects: nosebleeds (epistaxis)

May 19, 2009 (Started Sep 10, 2008)

  • Effectiveness
    Major (for Other)
  • Side effects
    Moderate (nosebleeds (epistaxis))
  • Adherence
    Always
  • Burden
    Somewhat hard to take
Dosage: 7.5 mg Daily
Advice & Tips: If your Dr. (usually a Cardiologist) puts you on this following an episode of finding a clot, BE SURE TO GET THEM TO DO A PROTEIN C & S TEST for Hereditary blood clotting disorder. I DO have the Hypercoaguability disorder because blood clots killed a large number of folks in my mother's family. I'll be on it for the rest of my life. AND be careful of how much greens you eat, especially kale and spinach and if you are a traveler on airplanes or sit a long time, be sure to get up and walk around every 1 to 2 hours! The circulation in your legs is critical for this!
Cost: < $25 monthly
Side effects: nosebleeds (epistaxis)

  • 0 helpful marks

Aug 30, 2014 (Started Sep 12, 2013)

  • Effectiveness
    Major (for Prevent blood clotting)
  • Side effects
    Mild (nausea)
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 4 mg Daily

  • 0 helpful marks
Last updated:
Showing 3 of 24 patient evaluations for Warfarin