Description:
Clarithromycin is a macrolide antibiotic used to treat a wide range of bacterial infections. It works by stopping the growth of bacteria in the body. It is also prescribed in combination with certain anti-ulcer medicines to treat stomach ulcers caused by Helicobacter pylori. This antibiotic is effective against bacterial infections but has no effect on viral illnesses like the common cold or flu.
Primary Uses
-
Bacterial infections.
-
Stomach ulcers (with anti-ulcer medicines).
Indications
Clarithromycin is commonly prescribed for:
-
Upper and lower respiratory tract infections.
-
Bronchitis.
-
Pharyngitis and tonsillitis.
-
Acute otitis media (ear infections).
-
Skin and soft tissue infections (muscles, tendons, ligaments, etc.).
-
Helicobacter pylori infections.
-
Mycobacterium avium complex infections.
How to Use
-
Take orally with or without food, as directed by your doctor.
-
If stomach upset occurs, take with food or milk.
-
For best results, take at evenly spaced times.
-
Complete the full prescribed course even if symptoms improve.
-
Do not crush or chew.
-
Consult your doctor for dose adjustments and duration.
Expert Advice
-
Store at room temperature, away from direct sunlight and moisture.
-
Do not refrigerate.
-
Keep out of reach of children and pets.
-
Do not discard improperly — consult a pharmacist for safe disposal.
Side Effects
Some patients may experience:
-
Stomach upset or diarrhea.
-
Paraesthesia (tingling sensation).
-
Stomatitis (mouth inflammation).
-
Glossitis (tongue inflammation).
Seek medical attention if symptoms persist or worsen.
Warnings
Pregnancy: Use only under medical supervision.
Lactation: Consult your doctor before use.
Driving: Generally safe to drive after use.
Liver: Use with caution; consult a doctor if you have liver disease.
Kidney: Use with caution in patients with kidney problems.
Alcohol: Avoid alcohol while taking clarithromycin.
Precautions
-
For oral use only.
-
Do not use if allergic to clarithromycin or other macrolides.
-
Inform your doctor about past medical history, especially heart or liver problems.
-
Monitor magnesium levels if you are at risk of deficiency.
Contraindications
Do not use Clarithromycin in case of:
-
Diarrhea caused by Clostridium difficile infection.
-
Low blood magnesium.
-
Myasthenia Gravis.
-
Coronary artery disease.
-
Rapid ventricular heartbeat.
FAQs
1. Can Clarithromycin cause serious allergic reactions?
Serious reactions are rare, but seek medical help if you develop rash, itching, swelling, or difficulty breathing.
2. Should Clarithromycin be refrigerated?
No, store at room temperature away from heat and sunlight.
3. Should it be taken with food?
Extended-release tablets should be taken with food. Suspension can be taken with or without food.
4. How long before it works on skin infections?
Noticeable improvement is usually seen in about 7 days.
5. What is its major advantage?
Clarithromycin has a longer half-life and better tissue penetration compared to other antibiotics.
Doctor’s Review
Dr. Ayesha Malik, Infectious Disease Specialist
“Clarithromycin remains a trusted antibiotic for respiratory, skin, and stomach-related bacterial infections. Its strong tissue penetration and effectiveness make it a reliable choice, but patients should always complete the full course and avoid misuse to prevent antibiotic resistance.”
Disclaimer
This content is for informational purposes only and not a substitute for professional medical advice. Always consult your doctor before starting, stopping, or changing any medication.

Reviews
There are no reviews yet.