Clinical Overview
Clarithromycin is an advanced semi-synthetic macrolide antibiotic. It binds to the 50S ribosomal subunit, preventing protein synthesis, and is metabolized into an active 14-hydroxyclarithromycin metabolite with enhanced bactericidal activity against Haemophilus influenzae. Indicated for community-acquired pneumonia, pharyngitis/tonsillitis, acute sinusitis, skin infections, Mycobacterium avium complex (MAC) in HIV, and H. pylori eradication in triple therapy.
Active Pharmaceutical Ingredients
Verified Clinical References
Usage Guidelines
Swallow whole with water. May be taken with or without food; taking with food does not decrease bioavailability and may decrease gastric upset. Complete the full prescribed course.
General Administration Advice: Adhere strictly to the prescribed dosage, frequency, and treatment course. For oral medications, swallow with sufficient water. Never stop antibiotics, psychiatric medications, or antihypertensives abruptly without clinical direction.
Possible Side Effects
Common: Metallic/altered taste (dysgeusia), nausea, diarrhea, abdominal discomfort, headache. Rare/Severe: QT prolongation and ventricular arrhythmias, cholestatic jaundice, hearing loss (reversible), and severe allergic reactions.
*Note: Individual physiological responses vary. While many patients experience few or no side effects, notify your treating physician if adverse reactions persist or if hypersensitivity (angioedema, skin rash, dyspnea) occurs.
Precautions & Warnings
Contraindicated in patients with history of QT prolongation, ventricular arrhythmias, or concurrent use with statins metabolized by CYP3A4 (simvastatin, lovastatin) due to severe rhabdomyolysis risk. Caution in patients with coronary artery disease. Adjust dose in renal impairment.
Schedule H1 (Prescription Required)
This medication is scheduled under statutory drug regulatory frameworks (CDSCO / Drugs & Cosmetics Rules). Dispensing requires a valid medical prescription from a registered medical practitioner. Self-medication or unsupervised dosage adjustment carries significant clinical risks.
Medical Disclaimer: Statutory Clinical Disclaimer: The information provided is for educational and price-transparency purposes only and does not constitute medical advice, clinical diagnosis, or treatment recommendations. Always consult a registered medical practitioner or qualified pharmacist before initiating, modifying, or substituting any medication regimen.