Klacid Paediatric Suspension (Clarithromycin)

Clarithromycin is a macrolide antibiotic used to treat bacterial infections in the pediatric population.

• Acute otitis media: reduces bacterial load and alleviates ear pain in children.
• Community‑acquired pneumonia: clears the infection and improves respiratory function.
• Streptococcal pharyngitis: eradicates streptococcal bacteria and relieves throat symptoms.
• Sinusitis: treats bacterial sinus inflammation and restores normal sinus drainage.
• Skin and soft‑tissue infections: eliminates causative bacteria and promotes healing of lesions.

• Clarithromycin binds to the 50S subunit of bacterial ribosomes, blocking the translocation step of protein synthesis. This inhibition prevents the elongation of peptide chains, halting bacterial growth. The drug exhibits a bacteriostatic effect against many Gram‑positive and some Gram‑negative organisms, and at higher concentrations can be bactericidal. Its activity is concentration‑dependent and not affected by host immune status.

Common Side Effects

• Diarrhea: loose stools may occur during treatment.
• Nausea: feeling of sickness or upset stomach.
• Taste alteration: a metallic or bitter taste is often reported.
• Abdominal pain: discomfort or cramps in the stomach area.
• Vomiting: expulsion of stomach contents.

Serious or Rare Side Effects

• Severe allergic reactions: rash, swelling, or anaphylaxis.
• Hepatic dysfunction: elevated liver enzymes or jaundice.
• QT interval prolongation: may lead to cardiac arrhythmias.
• Clostridioides difficile infection: severe colitis after antibiotic use.
• Anaphylaxis: life‑threatening hypersensitivity reaction.

Before prescribing Klacid Paediatric Suspension, consider the following precautions:

• Dose adjustment in renal impairment: reduce dose as advised by the prescriber.
• Monitor liver function: clarithromycin may elevate transaminases.
• Avoid use in patients with known macrolide hypersensitivity: risk of allergic reaction.
• Caution in patients taking drugs that prolong QT interval: may increase cardiac risk.
• Use during pregnancy only if clearly needed: limited data on safety.
• Store at ambient temperature: keep in original container, protect from moisture and light.

Clarithromycin interacts with several medicines; awareness helps prevent adverse events.

Major Interactions (Avoid)

• Simvastatin and lovastatin: increased risk of myopathy.
• Ergotamine derivatives: risk of severe vasospasm.
• Pimozide: may cause serious cardiac arrhythmias.

Moderate Interactions (Monitor Closely)

• Theophylline: clarithromycin can raise plasma concentrations.
• Warfarin: may enhance anticoagulant effect and raise INR.