Coumadin and Weakness - from FDA reports

Weakness is found among people who take Coumadin, especially for people who are female, 60+ old , have been taking the drug for < 1 month, also take medication Lasix, and have Primary pulmonary hypertension. This study is created by eHealthMe based on reports of 112,498 people who have side effects when taking Coumadin from FDA, and is updated regularly.

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On Nov, 12, 2018

112,498 people reported to have side effects when taking Coumadin.
Among them, 7,117 people (6.33%) have Weakness

Number of reports submitted per year:

Could Coumadin cause Weakness?

Time on Coumadin when people have Weakness *:

  • < 1 month: 24.66 %
  • 1 - 6 months: 18.83 %
  • 6 - 12 months: 11.21 %
  • 1 - 2 years: 15.7 %
  • 2 - 5 years: 13.9 %
  • 5 - 10 years: 12.11 %
  • 10+ years: 3.59 %

Gender of people who have Weakness when taking Coumadin *:

  • female: 58.09 %
  • male: 41.91 %

Age of people who have Weakness when taking Coumadin *:

  • 0-1: 0.07 %
  • 2-9: 0.03 %
  • 10-19: 0.27 %
  • 20-29: 1.13 %
  • 30-39: 2.86 %
  • 40-49: 7.03 %
  • 50-59: 14.83 %
  • 60+: 73.78 %

Top conditions involved for these people *:

  1. Primary Pulmonary Hypertension (primary high blood pressure that affects the arteries in the lungs and the right side of your heart): 568 people, 7.98%
  2. Multiple Myeloma (cancer of the plasma cells): 425 people, 5.97%
  3. Pain: 341 people, 4.79%
  4. High Blood Pressure: 323 people, 4.54%
  5. Osteoporosis (bones weak and more likely to break): 303 people, 4.26%

Click here to view more results or personalize the results to your gender and age

Top co-used drugs for these people *:

  1. Lasix: 1,652 people, 23.21%
  2. Digoxin: 905 people, 12.72%
  3. Aspirin: 868 people, 12.20%
  4. Zometa: 842 people, 11.83%
  5. Synthroid: 742 people, 10.43%

Click here to view more results or personalize the results to your gender and age

Top other side effects for these people *:

  1. Fatigue (feeling of tiredness): 2,126 people, 29.87%
  2. Breathing Difficulty: 1,660 people, 23.32%
  3. Nausea (feeling of having an urge to vomit): 1,583 people, 22.24%
  4. Pain: 1,545 people, 21.71%
  5. Dizziness: 1,422 people, 19.98%

Click here to view more results or personalize the results to your gender and age

* Approximation only. Some reports may have incomplete information.

FDA reports used in this study

Do you have Weakness while taking Coumadin?

You are not alone:

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Coumadin has active ingredients of warfarin sodium. It is often used in blood clots. (latest outcomes from Coumadin 116,666 users)


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What would happen?

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NOTE: The study is based on active ingredients and brand name. Other drugs that have the same active ingredients (e.g. generic drugs) are NOT considered.

WARNING: Please DO NOT STOP MEDICATIONS without first consulting a physician since doing so could be hazardous to your health.

DISCLAIMER: All material available on is for informational purposes only, and is not a substitute for medical advice, diagnosis, or treatment provided by a qualified healthcare provider. All information is observation-only, and has not been supported by scientific studies or clinical trials unless otherwise stated. Different individuals may respond to medication in different ways. Every effort has been made to ensure that all information is accurate, up-to-date, and complete, but no guarantee is made to that effect. The use of the eHealthMe site and its content is at your own risk.

You may report adverse side effects to the FDA at or 1-800-FDA-1088 (1-800-332-1088).

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