Review: could Warfarin Sodium cause Fainting?


Fainting is found among people who take Warfarin Sodium, especially for people who are female, 60+ old , have been taking the drug for 1 - 6 months, also take medication Digoxin, and have Atrial fibrillation . We study 47,969 people who have side effects while taking Warfarin sodium from FDA and social media. Among them, 769 have Fainting. Find out below who they are, when they have Fainting and more.

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Warfarin Sodium

Warfarin sodium has active ingredients of warfarin sodium. It is often used in atrial fibrillation/flutter. (latest outcomes from Warfarin sodium 49,826 users)


Fainting (loss of consciousness and postural tone) has been reported by people with itching, drowsiness, fatigue, anaemia, fall (latest reports from 53,635 Fainting patients).

On Aug, 21, 2016

47,969 people reported to have side effects when taking Warfarin Sodium.
Among them, 769 people (1.6%) have Fainting

Number of reports submitted per year:

Could Warfarin sodium cause Fainting?

Time on Warfarin Sodium when people have Fainting *:

  • < 1 month: 29.17 %
  • 1 - 6 months: 31.25 %
  • 6 - 12 months: 16.67 %
  • 1 - 2 years: 10.42 %
  • 2 - 5 years: 4.17 %
  • 5 - 10 years: 4.17 %
  • 10+ years: 4.17 %

Gender of people who have Fainting when taking Warfarin Sodium *:

  • female: 50.48 %
  • male: 49.52 %

Age of people who have Fainting when taking Warfarin Sodium *:

  • 0-1: 0.16 %
  • 2-9: 0.0 %
  • 10-19: 0.48 %
  • 20-29: 0.96 %
  • 30-39: 1.76 %
  • 40-49: 6.71 %
  • 50-59: 14.86 %
  • 60+: 75.08 %

Severity if Fainting when taking Warfarin Sodium **:

  • least: 0.0 %
  • moderate: 0.0 %
  • severe: 100 %
  • most severe: 0.0 %

Top conditions involved for these people *:

  • Atrial Fibrillation (132 people)
  • Hypertension (67 people)
  • Depression (44 people)
  • Multiple Myeloma (34 people)
  • Pulmonary Arterial Hypertension (28 people)

Top co-used drugs for these people *:

  • Digoxin (199 people)
  • Furosemide (177 people)
  • Lisinopril (146 people)
  • Aspirin (116 people)
  • Lasix (100 people)

* Approximation only. Some reports may have incomplete information.

** Reports from social media are used.

How to use the study: print a copy of the study and bring it to your health teams to ensure drug risks and benefits are fully discussed and understood.

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