Viread and Anaemia macrocytic - a phase IV clinical study of FDA data


Anaemia macrocytic is found among people who take Viread, especially for people who are male, 40-49 old, have been taking the drug for 6 - 12 months.

The phase IV clinical study analyzes which people take Viread and have Anaemia macrocytic. It is created by eHealthMe based on reports of 46,220 people who have side effects when taking Viread from the FDA, and is updated regularly. You can use the study as a second opinion to make health care decisions.

Phase IV trials are used to detect adverse drug outcomes and monitor drug effectiveness in the real world. With medical big data and AI algorithms, eHealthMe is running millions of phase IV trials and makes the results available to the public. Our original studies have been referenced on 600+ medical publications including The Lancet, Mayo Clinic Proceedings, and Nature.

On Nov, 27, 2022

46,220 people reported to have side effects when taking Viread.
Among them, 20 people (0.04%) have Anaemia macrocytic.

What is Viread?

Viread has active ingredients of tenofovir disoproxil fumarate. It is often used in hepatitis b. eHealthMe is studying from 46,326 Viread users for its effectiveness, alternative drugs and more.

What is Anaemia macrocytic?

Anaemia macrocytic (a macrocytic class of anaemia) is found to be associated with 856 drugs and 481 conditions by eHealthMe.

Number of Viread and Anaemia macrocytic reports submitted per year:

Could Viread cause Anaemia macrocytic?

Time on Viread when people have Anaemia macrocytic *:

  • < 1 month: 0.0 %
  • 1 - 6 months: 33.33 %
  • 6 - 12 months: 41.67 %
  • 1 - 2 years: 8.33 %
  • 2 - 5 years: 16.67 %
  • 5 - 10 years: 0.0 %
  • 10+ years: 0.0 %

Gender of people who have Anaemia macrocytic when taking Viread *:

  • female: 40 %
  • male: 60 %

Age of people who have Anaemia macrocytic when taking Viread *:

  • 0-1: 0.0 %
  • 2-9: 0.0 %
  • 10-19: 0.0 %
  • 20-29: 0.0 %
  • 30-39: 15 %
  • 40-49: 55 %
  • 50-59: 5 %
  • 60+: 25 %

Common drugs people take besides Viread *:

  1. Combivir: 6 people, 30.00%
  2. Zerit: 5 people, 25.00%
  3. Kaletra: 5 people, 25.00%
  4. Leucovorin Calcium: 5 people, 25.00%
  5. Epzicom: 5 people, 25.00%
  6. Epivir: 5 people, 25.00%
  7. Allopurinol: 3 people, 15.00%
  8. Norvir: 3 people, 15.00%
  9. Bactrim Ds: 3 people, 15.00%
  10. Lamivudine: 2 people, 10.00%

Common side effects people have besides Anaemia macrocytic *:

  1. Normochromic Normocytic Anaemia (forms of anaemia in which the average size and haemoglobin content of the red blood cells are within normal limits): 5 people, 25.00%
  2. Haematuria (presence of blood in urine): 5 people, 25.00%
  3. Lactic Acidosis (low ph in body tissues): 5 people, 25.00%
  4. Renal Disorder (kidney disease): 5 people, 25.00%
  5. Weakness: 4 people, 20.00%
  6. Pancytopenia (medical condition in which there is a reduction in the number of red and white blood cells, as well as platelets): 4 people, 20.00%
  7. Thrombocytopenia (decrease of platelets in blood): 4 people, 20.00%
  8. Anaemia (lack of blood): 3 people, 15.00%
  9. Drug Toxicity: 3 people, 15.00%
  10. Myelodysplastic Syndrome (a group of conditions that occur when the blood-forming cells in the bone marrow are damaged): 3 people, 15.00%

Common conditions people have *:

  1. Toxoplasmosis (a parasitic disease caused by the protozoan toxoplasma gondii): 4 people, 20.00%
  2. Asymptomatic Hiv Infection: 2 people, 10.00%
  3. Rhinitis (a medical term for irritation and inflammation of the mucous membrane inside the nose): 1 person, 5.00%
  4. Psychotic Disorder: 1 person, 5.00%
  5. Pneumocystis Jiroveci Pneumonia (fungal infection of the lungs): 1 person, 5.00%

* Approximation only. Some reports may have incomplete information.

Do you take Viread and have Anaemia macrocytic?

Check whether Anaemia macrocytic 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

How severe was Anaemia macrocytic and when was it recovered:

Expand to all the drugs that have ingredients of tenofovir disoproxil fumarate:

Alternative drugs to, pros and cons of Viread:

Common Viread side effects:

Browse all side effects of Viread:

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

Anaemia macrocytic treatments and more:

COVID vaccines that are related to Anaemia macrocytic:

Common drugs associated with Anaemia macrocytic:

All the drugs that are associated with Anaemia macrocytic:

Common conditions associated with Anaemia macrocytic:

All the conditions that are associated with Anaemia macrocytic:

How the study uses the data?

The study uses data from the FDA. It is based on tenofovir disoproxil fumarate (the active ingredients of Viread) and Viread (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+ 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 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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