Famvir and Losartan potassium drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Famvir (famciclovir) and Losartan potassium (losartan potassium). Common drug interactions include renal failure acute among females and eyelid ptosis among males.

The phase IV clinical study analyzes what interactions people have when they take Famvir and Losartan potassium. It is created by eHealthMe based on reports of 14 people who take the same drugs from the FDA, and is updated regularly.

What is Famvir?

Famvir has active ingredients of famciclovir. It is often used in herpes labialis (oral herpes simplex). eHealthMe is studying from 3,061 Famvir users. Check the latest studies of Famvir.

What is Losartan potassium?

Losartan potassium has active ingredients of losartan potassium. It is often used in high blood pressure. eHealthMe is studying from 51,511 Losartan potassium users. Check the latest studies of Losartan potassium.



On Jul, 11, 2026

14 people who take Famvir and Losartan potassium together, and have interactions are studied.

Famvir and Losartan potassium drug interactions.

What are the common drug interactions of Famvir and Losartan Potassium, by gender? *:

female:

  1. Renal failure acute (rapid kidney dysfunction)
  2. Atrial natriuretic peptide increased
  3. Brain natriuretic peptide increased
  4. Platelet count decreased
  5. Red blood cell count decreased
  6. White blood cell count decreased
  7. Cardio-respiratory arrest (sudden dysfunction of heart and lungs)
  8. Death
  9. Hepatitis (inflammation of the liver)
  10. Scleroderma (hard skin)

male:

  1. Eyelid ptosis (falling of the upper or lower eyelid)
  2. Suicidal ideation
  3. Knee arthroplasty
  4. Seizure (abnormal excessive or synchronous neuronal activity in the brain)
  5. Surgery
  6. Therapeutic response unexpected
  7. Withdrawal syndrome (a discontinuation syndrome is a set of symptoms occurred due to discontinuation of substance)

What are the common drug interactions of Famvir and Losartan Potassium, by age (0-1 to 60+)? *:

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

n/a

40-49:

n/a

50-59:

  1. Withdrawal syndrome (a discontinuation syndrome is a set of symptoms occurred due to discontinuation of substance)

60+:

  1. Anaemia (lack of blood)
  2. Nausea (feeling of having an urge to vomit)
  3. Death
  4. Hepatitis (inflammation of the liver)
  5. Knee arthroplasty
  6. Scleroderma (hard skin)
  7. Pyrexia (fever)
  8. Renal failure acute (rapid kidney dysfunction)
  9. Atrial natriuretic peptide increased
  10. Brain natriuretic peptide increased

What are the existing conditions these people have? *

  1. Herpes Zoster: 5 people, 35.71%
  2. Insomnia (sleeplessness): 4 people, 28.57%
  3. Viith Nerve Paralysis: 1 person, 7.14%
  4. Essential Thrombocythaemia (chronic blood cancer): 1 person, 7.14%
  5. Chronic Lymphocytic Leukaemia (cancer in which the bone marrow makes too many lymphocytes (a type of white blood cell)): 1 person, 7.14%

* Approximation only. Some reports may have incomplete information.

Do you take Famvir and Losartan potassium?

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Related studies:

Effectiveness of, side effects of, and alternative drugs to the 2 drugs:

Browse all drug interactions of Famvir and Losartan potassium:

a b c d e f g h i j k l m n o p q r s t u v w x y z

Sub-studies by gender and age:

Female: 0-1 2-9 10-19 20-29 30-39 40-49 50-59 60+

Male: 0-1 2-9 10-19 20-29 30-39 40-49 50-59 60+

Browse all side effects of Famvir:

a b c d e f g h i j k l m n o p q r s t u v w x y z

Browse all side effects of Losartan potassium:

a b c d e f g h i j k l m n o p q r s t u v w x y z

Browse all interactions between Famvir and drugs from A to Z:

a b c d e f g h i j k l m n o p q r s t u v w x y z

Browse all interactions between Losartan potassium and drugs from A to Z:

a b c d e f g h i j k l m n o p q r s t u v w x y z

Related publications that referenced our studies


How the study uses the data?

The study uses data from the FDA. It is based on famciclovir and losartan potassium (the active ingredients of Famvir and Losartan potassium, respectively), and Famvir and Losartan potassium (the brand names). Other drugs that have the same active ingredients (e.g. generic drugs) are not considered. Dosage of drugs is not considered in the study.

How to use the study?

DO NOT STOP MEDICATIONS without first consulting your doctor. If there are any serious or long term adverse effects discovered in the study, discuss the study with your doctor to ensure that proper medication management will be in place if applicable.

Who is eHealthMe?

With medical big data and proven AI/ML 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 800+ 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, DISCLAIMER, USE FOR PUBLICATION

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.

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