Pegasys and Cozaar drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Pegasys (peginterferon alfa 2a) and Cozaar (losartan potassium). Common drug interactions include acute respiratory failure among females and platelet count decreased among males.

The phase IV clinical study analyzes what interactions people have when they take Pegasys and Cozaar. It is created by eHealthMe based on reports of 93 people who take the same drugs from the FDA, and is updated regularly.

What is Pegasys?

Pegasys has active ingredients of peginterferon alfa 2a. It is often used in hepatitis c. eHealthMe is studying from 57,446 Pegasys users. Check the latest studies of Pegasys.

What is Cozaar?

Cozaar has active ingredients of losartan potassium. It is often used in high blood pressure. eHealthMe is studying from 45,124 Cozaar users. Check the latest studies of Cozaar.

On Jul, 14, 2026

93 people who take Pegasys and Cozaar together, and have interactions are studied.

What are the common drug interactions of Pegasys and Cozaar, by gender? *:

female:

Acute respiratory failure
Alanine aminotransferase increased
Aspartate aminotransferase increased
Blood alkaline phosphatase increased
Blood bilirubin increased
Blood sodium decreased
Brain natriuretic peptide increased
Cardiac arrest
Cough
Dry skin

male:

Platelet count decreased
Viith nerve paralysis
Pyrexia (fever)
Anaemia (lack of blood)
Acute respiratory failure
Ascites (accumulation of fluid in the abdominal cavity)
Blood glucose increased
Dyspnoea (difficult or laboured respiration)
Hepatic cirrhosis (chronic liver disease characterized by replacement of liver tissue by fibrosis, scar tissue)
Incoherent (talking in a confused and unclear way)

What are the common drug interactions of Pegasys and Cozaar, 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:

Fatigue (feeling of tiredness)
Nausea (feeling of having an urge to vomit)
Anaemia (lack of blood)
Asthenia (weakness)
Asthma
Dizziness
Haemorrhage (bleeding)
Platelet count decreased
Retching (strong involuntary effort to vomit)
Subdural haematoma (blood collects between the skull and the surface of the brain)

50-59:

Platelet count decreased
Haemoglobin decreased
Hepatic steatosis (fatty liver disease)
Vomiting
Decreased appetite
Hot flush (sudden feelings of heat)
Neutrophil count decreased (less than normal number of neutrophil a type of blood cell)
Oedema peripheral (superficial swelling)
Pyrexia (fever)
Rash

60+:

Fatigue (feeling of tiredness)
Decreased appetite
Dizziness
Dyspnoea (difficult or laboured respiration)
Hepatic cirrhosis (chronic liver disease characterized by replacement of liver tissue by fibrosis, scar tissue)
Incoherent (talking in a confused and unclear way)
Neutropenia (an abnormally low number of neutrophils)
Pallor
Pancytopenia (medical condition in which there is a reduction in the number of red and white blood cells, as well as platelets)
Personality change

What are the existing conditions these people have? *

Diabetes: 8 people, 8.60%

* Approximation only. Some reports may have incomplete information.

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