Effexor xr and Blister - a phase IV clinical study of FDA data


Blister is found among people who take Effexor xr, especially for people who are female, 60+ old, have been taking the drug for < 1 month.

The phase IV clinical study analyzes which people take Effexor xr and have Blister. It is created by eHealthMe based on reports of 30,113 people who have side effects when taking Effexor xr from the FDA, and is updated regularly. You can use the study as a second opinion to make health care decisions.

With medical big data and AI algorithms, eHealthMe enables everyone to run phase IV clinical trial to detect adverse drug outcomes and monitor effectiveness. Our original studies have been referenced on 600+ peer-reviewed medical publications including The Lancet, Mayo Clinic Proceedings, and Nature. Most recently, phase IV clinial trails for COVID 19 vaccines have been added, check here.

On Jun, 30, 2022

30,113 people reported to have side effects when taking Effexor xr.
Among them, 55 people (0.18%) have Blister.

What is Effexor xr?

Effexor xr has active ingredients of venlafaxine hydrochloride. It is often used in depression. eHealthMe is studying from 33,939 Effexor xr users for its effectiveness, alternative drugs and more.

What is Blister?

Blister (small pocket of fluid within the upper layers of the skin caused by forceful rubbing (friction), burning, freezing, chemical exposure) is found to be associated with 2,627 drugs and 2,120 conditions by eHealthMe.

Number of Effexor xr and Blister reports submitted per year:

Could Effexor xr cause Blister?

Time on Effexor xr when people have Blister *:

  • < 1 month: 100 %
  • 1 - 6 months: 0.0 %
  • 6 - 12 months: 0.0 %
  • 1 - 2 years: 0.0 %
  • 2 - 5 years: 0.0 %
  • 5 - 10 years: 0.0 %
  • 10+ years: 0.0 %

Gender of people who have Blister when taking Effexor xr *:

  • female: 76.92 %
  • male: 23.08 %

Age of people who have Blister when taking Effexor xr *:

  • 0-1: 0.0 %
  • 2-9: 0.0 %
  • 10-19: 0.0 %
  • 20-29: 5.13 %
  • 30-39: 10.26 %
  • 40-49: 10.26 %
  • 50-59: 33.33 %
  • 60+: 41.03 %

Common drugs people take besides Effexor xr *:

  1. Effexor: 7 people, 12.73%
  2. Vitamin B12: 7 people, 12.73%
  3. Lyrica: 7 people, 12.73%
  4. Synthroid: 7 people, 12.73%
  5. Metformin: 6 people, 10.91%
  6. Dilaudid: 5 people, 9.09%
  7. Lamictal: 5 people, 9.09%
  8. Fish Oil: 5 people, 9.09%
  9. Benadryl: 5 people, 9.09%
  10. Ativan: 5 people, 9.09%

Common side effects people have besides Blister *:

  1. Rashes (redness): 23 people, 41.82%
  2. Itching: 12 people, 21.82%
  3. Weakness: 12 people, 21.82%
  4. Peripheral Swelling: 8 people, 14.55%
  5. Diarrhea: 7 people, 12.73%
  6. Fatigue (feeling of tiredness): 7 people, 12.73%
  7. Joint Pain: 7 people, 12.73%
  8. Malaise (a feeling of general discomfort or uneasiness): 7 people, 12.73%
  9. Breathing Difficulty: 7 people, 12.73%
  10. Feeling Hot: 7 people, 12.73%

Common conditions people have *:

  1. Diabetes: 8 people, 14.55%
  2. Pain: 8 people, 14.55%
  3. Neuropathy Peripheral (surface nerve damage): 5 people, 9.09%
  4. Arthritis (form of joint disorder that involves inflammation of one or more joints): 4 people, 7.27%
  5. Thrombosis (formation of a blood clot inside a blood vessel): 4 people, 7.27%
  6. Seasonal Affective Disorder (a type of depression that occurs at a certain time of the year, usually in the winter): 4 people, 7.27%
  7. Haemorrhage (bleeding): 4 people, 7.27%
  8. High Blood Cholesterol: 4 people, 7.27%
  9. Hot Flush (sudden feelings of heat): 4 people, 7.27%
  10. Cardiac Disorder: 4 people, 7.27%

* Approximation only. Some reports may have incomplete information.

Do you take Effexor xr and have Blister?

Check whether Blister is associated with a drug or a condition

How to use the study?

You can discuss the study with your doctor, to ensure that all drug risks and benefits are fully discussed and understood.

Related studies

Alternative drugs to, pros and cons of Effexor xr:

Blister treatments and more:

COVID vaccines that are related to Blister:

How severe was Blister and when was it recovered:

Expand to all the drugs that have ingredients of venlafaxine hydrochloride:

Common drugs associated with Blister:

All the drugs that are associated with Blister:

Common conditions associated with Blister:

All the conditions that are associated with Blister:

How the study uses the data?

The study uses data from the FDA. It is based on venlafaxine hydrochloride (the active ingredients of Effexor xr) and Effexor xr (the brand name). Other drugs that have the same active ingredients (e.g. generic drugs) are not considered. Dosage of drugs is not considered in the study.

Who is eHealthMe?

With medical big data and proven AI algorithms, eHealthMe provides a platform for everyone to run phase IV clinical trials. We study millions of patients and 5,000 more each day. Results of our real-world drug study have been referenced on 600+ peer-reviewed medical publications, including The Lancet, Mayo Clinic Proceedings, and Nature. Our analysis results are available to researchers, health care professionals, patients (testimonials), and software developers (open API).


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 eHealthMe.com 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. Our phase IV clinical studies alone cannot establish cause-effect relationship. 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.

If you use this eHealthMe study on publication, please acknowledge it with a citation: study title, URL, accessed date.

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