Introduction

Clarthromycin is a type of antibiotic drug, used for treatment of many different bacterial infections. It belongs to the class of macrolide antibiotics, which work by interfering with bacterial protein synthesis.

Uses

Clarthromycin is used for treating a wide range of bacterial infections, such as ear infections, pneumonia, skin infections, urinary tract infections, tonsillitis, and some sexually transmitted disease. It is also used in some cases of Legionnaires' disease, sinusitis, and throat infections.

Mechanism of Action

Clarthromycin works by inhibiting bacterial protein synthesis. It does this by blocking the action of a bacterial enzyme called transpeptidase. This enzyme is responsible for constructing new proteins in the bacteria, which are required for the bacteria to survive and reproduce. By blocking the function of this enzyme, the drug is able to stop bacterial proliferation.

How Long Does it Take to Work?

Clarthromycin usually begins to take effect within 12-24 hours after it is taken. It may take up to 3 days to start feeling relief from the symptoms of the infection.

Absorption

Clarthromycin is typically well absorbed in the digestive tract, with an absorption rate of approximately 60%. It is also rapidly distributed in the tissues and bloodstream.

Route of Elimination

Clarthromycin is eliminated mainly unchanged in the urine. It is also eliminated in smaller amounts by the kidneys and gastrointestinal tract.

Dosage

Clarthromycin is available in generic and brand-name versions as 250 mg or 500 mg tablets. The usual recommended dosage is 250-500 mg twice daily. For severe infections, it is often recommended to be taken every 8 hours.

Administration

Clarthromycin should be taken with food or a glass of milk. It can also be taken with a full glass of water. It should be taken at the same time each day.

Side Effect

Common side effects of clarthromycin include nausea, diarrhea, vomiting, abdominal pain, dizziness, vertigo, headache, and rash. It may also cause liver damage in rare cases, which can lead to liver failure.

Toxicity

Clarthromycin is generally well tolerated. However, an overdose may lead to serious side effects such as seizures, coma, and liver failure. An overdose should be treated as soon as possible.

Precaution

Clarthromycin is not recommended for people who have had an allergic reaction to it before. It should also be used with caution in people with kidney or liver disease, and in people with a history of arrhythmia.

Interaction

Clarthromycin may interact with certain drugs, including antacids, vitamin/mineral supplements, warfarin, or drugs used to treat arrhythmias. It may also interact with other antibiotics, so it is important to check with your doctor before taking it.

Disease Interaction

Clarthromycin may interact with certain medical conditions, including arrhythmias, liver disease, or kidney disease. It may also interact with diseases such as HIV, tuberculosis, or any autoimmune diseases.

Drug Interaction

Clarthromycin may interact with certain drugs, such as antacids, vitamin/mineral supplements, warfarin, or drugs used to treat arrhythmias. It is important to check with your doctor before combining it with any other medications or supplements.

Food Interactions

Clarthromycin may interact with certain foods, such as dairy products, alcohol, or foods that are high in fat. It is important to check with your doctor before taking this medication with any foods.

Pregnancy Use

Clarthromycin is not recommended for pregnant women, as it may cause harm to the unborn baby. Women who are pregnant or breastfeeding should consult a doctor before taking this medication.

Lactation Use

Clarthromycin is not recommended for women who are breastfeeding, as it may pass into breast milk and cause harm to the baby. Women who are breastfeeding should consult a doctor before taking this medication.

Acute Overdose

An overdose of clarthromycin can lead to serious side effects, such as seizures, coma, and liver failure. If an overdose is suspected, it is important to seek medical attention as soon as possible.

Contraindication

Clarthromycin should not be taken by people who have had an allergic reaction to it before. It should also be avoided in people with liver disease and arrhythmias.

Use Direction

Clarthromycin should be taken as directed by your doctor. It is usually taken once or twice daily with food or a full glass of water.

Storage Condition

Clarthromycin should be stored in a cool, dry place away from light and humidity. It should be stored at room temperature.

Volume of Distribution

The volume of distribution of clarthromycin is approximately 0.4 L/kg.

Half Life

The half-life of clarthromycin is approximately 3-4 hours.

Clearance

The clearance of clarthromycin is approximately 1 ml/min/kg.

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*** Taking medicines without doctor's advice can cause long-term problems.
Dr. Uttom Kumar Shet

Dr. Uttom Kumar Shet

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