Viagra and Lamivudine drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Viagra (sildenafil citrate) and Lamivudine (lamivudine; zidovudine; nevirapine). Common drug interactions include flushing among males.

The phase IV clinical study analyzes what interactions people have when they take Viagra and Lamivudine. It is created by eHealthMe based on reports of 23 people who take the same drugs from the FDA, and is updated regularly.

What is Viagra?

Viagra has active ingredients of sildenafil citrate. It is often used in erection problems. eHealthMe is studying from 63,865 Viagra users. Check the latest studies of Viagra.

What is Lamivudine?

Lamivudine has active ingredients of lamivudine; zidovudine; nevirapine. It is often used in hiv infection. eHealthMe is studying from 17,242 Lamivudine users. Check the latest studies of Lamivudine.



On Apr, 29, 2026

23 people who take Viagra and Lamivudine together, and have interactions are studied.

Viagra and Lamivudine drug interactions.

What are the common drug interactions of Viagra and Lamivudine, by gender? *:

female:

n/a

male:

  1. Flushing (the warm, red condition of human skin)
  2. Anaemia (lack of blood)
  3. Deep vein thrombosis (blood clot in a major vein that usually develops in the legs and/or pelvis)
  4. Depression
  5. Dizziness
  6. Ecchymosis (a discoloration of the skin resulting from bleeding underneath)
  7. Eye pain
  8. Face oedema (swelling of face)
  9. Gastrointestinal cancer metastatic (gastrointestinal tract cancer spreads to other organ)
  10. Gastrointestinal haemorrhage (bleeding gastrointestinal tract)

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

  1. Eye pain
  2. Flushing (the warm, red condition of human skin)
  3. Palpitations (feelings or sensations that your heart is pounding or racing)
  4. Drug effect increased
  5. Erection increased (excl priapism)
  6. Eye inflammation
  7. Overdose
  8. Periorbital oedema (swelling around the eyes)
  9. Priapism (prolonged and painful erection that can last from several hours up to a few days)

40-49:

  1. Flushing (the warm, red condition of human skin)
  2. Anaphylactoid reaction (type of anaphylaxis that does not involve an allergic reaction but is due to direct mast cell degranulation)
  3. Pain
  4. Renal failure (kidney dysfunction)
  5. Throat oedema (swelling of throat)
  6. Abdominal pain
  7. Blood bilirubin increased
  8. Dysuria (painful or difficult urination)
  9. Joint stiffness
  10. Muscle stiffness

50-59:

n/a

60+:

n/a

What are the existing conditions these people have? *

  1. Nausea (feeling of having an urge to vomit): 3 people, 13.04%
  2. Insomnia (sleeplessness): 3 people, 13.04%
  3. High Blood Pressure: 3 people, 13.04%
  4. Candidiasis (candidiasis or thrush is a fungal infection): 3 people, 13.04%
  5. Asthma: 3 people, 13.04%
  6. Chest Pain: 2 people, 8.70%

* Approximation only. Some reports may have incomplete information.

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Related studies:

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

Browse all drug interactions of Viagra and Lamivudine:

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 Viagra:

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 Lamivudine:

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 Viagra 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 Lamivudine 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 sildenafil citrate and lamivudine; zidovudine; nevirapine (the active ingredients of Viagra and Lamivudine, respectively), and Viagra and Lamivudine (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.

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



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