Clarithromycin and Ketek drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Clarithromycin (clarithromycin) and Ketek (telithromycin). Common drug interactions include presyncope among females and diarrhoea among males.

The phase IV clinical study analyzes what interactions people have when they take Clarithromycin and Ketek. It is created by eHealthMe based on reports of 48 people who take the same drugs from the FDA, and is updated regularly.

What is Clarithromycin?

Clarithromycin has active ingredients of clarithromycin. It is often used in sinusitis. eHealthMe is studying from 45,044 Clarithromycin users. Check the latest studies of Clarithromycin.

What is Ketek?

Ketek has active ingredients of telithromycin. eHealthMe is studying from 4,631 Ketek users. Check the latest studies of Ketek.

On Jul, 31, 2026

48 people who take Clarithromycin and Ketek together, and have interactions are studied.

Clarithromycin and Ketek drug interactions.

What are the common drug interactions of Clarithromycin and Ketek, by gender? *:

female:

Presyncope
Staphylococcal infection (an infection with staphylococcus bacteria)
Urinary retention (the inability to completely or partially empty the bladder)
Uveitis (inflammation of the uvea)
Nephropathy (damage to or disease of a kidney)
Back pain
Blood amylase increased
Blood glucose increased
Chest discomfort
Culture urine positive

male:

Diarrhoea
Gamma-glutamyltransferase increased
Overdose
Abdominal discomfort
Atrial fibrillation (fibrillation of the muscles of the atria of the heart)
Bundle branch block right (absence of transmission of electric impulses from the atrioventricular (av) bundle of his to the right ventricle)
Cerebrovascular accident (sudden death of some brain cells due to lack of oxygen when the blood flow to the brain is impaired by blockage or rupture)
Delayed sleep phase
Hyperlipidaemia (presence of excess lipids in the blood)
Sick sinus syndrome (a collection of heart rhythm disorders)

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

Injury
Myocardial infarction (destruction of heart tissue resulting from obstruction of the blood supply to the heart muscle)
Pain

30-39:

Abdominal discomfort
Diarrhoea
Gamma-glutamyltransferase increased
Gastroenteritis (inflammation of stomach and intestine)
Hepatic steatosis (fatty liver disease)
Splenomegaly (enlargement of spleen)

40-49:

n/a

50-59:

Tenosynovitis (inflammation of the fluid-filled sheath (called the synovium) that surrounds a tendon)
Viral infection
White blood cell count increased
Abdominal pain
Back pain
Blindness unilateral
Blood glucose increased
Cataract (clouding of the lens inside the eye)
Corneal abrasion (loss of the surface of cornea)
Cough

60+:

Haemoptysis (blood-stained sputum from the bronchi, larynx, trachea, or lungs)
International normalised ratio increased
Renal failure (kidney dysfunction)
Asthenia (weakness)
Bundle branch block right (absence of transmission of electric impulses from the atrioventricular (av) bundle of his to the right ventricle)
Cerebrovascular accident (sudden death of some brain cells due to lack of oxygen when the blood flow to the brain is impaired by blockage or rupture)
Delayed sleep phase
Hyperlipidaemia (presence of excess lipids in the blood)
Injury
Palpitations (feelings or sensations that your heart is pounding or racing)

What are the existing conditions these people have? *

Atrial Fibrillation/flutter (atrial fibrillation and flutter are abnormal heart rhythms in which the atria, or upper chambers of the heart, are out of sync with the ventricles): 15 people, 31.25%
Bronchitis (inflammation of the mucous membrane in the bronchial tubes): 12 people, 25.00%
Tachyarrhythmia (disturbance of the heart rhythm in which the heart rate is abnormally increased): 11 people, 22.92%
Cough: 10 people, 20.83%
Coughing Up Blood: 8 people, 16.67%
Nasopharyngitis (inflammation of the nasopharynx): 4 people, 8.33%
Blood Pressure Abnormal: 4 people, 8.33%
Depression: 4 people, 8.33%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 4 people, 8.33%
Infection: 4 people, 8.33%

* Approximation only. Some reports may have incomplete information.

Do you take Clarithromycin and Ketek?

- Personalize this study to your gender, age, symptoms and drugs
- Predict drug outcomes for up to one year with AI
- Get an AI agent to monitor your drugs continuously