Product image of Klacid (Clarithromycin) supplied by GNH India

Klacid

Active Ingredient:
Clarithromycin
Origin:
EU

Klacid (Clarithromycin)

Clarithromycin, the active ingredient in Klacid, is a macrolide antibiotic presented as an intravenous solution for intravenous use. It treats bacterial infections such as community‑acquired pneumonia, acute bacterial sinusitis, skin and soft tissue infections, streptococcal pharyngitis and Helicobacter pylori eradication in adults.

GNH India supplies Klacid as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide, providing regulated quality‑assured batches for clinical use. The company adheres to EU GMP standards and offers reliable logistics for global distribution, ensuring product integrity throughout the supply chain.

Manufacturer / TM Owner

Viatris Oy

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Indications & Clinical Uses

  • Clarithromycin is a macrolide antibiotic used to treat infections of the respiratory and related systems.
  • Community‑acquired pneumonia: eliminates the causative bacteria and improves respiratory function.
  • Acute bacterial sinusitis: reduces sinus inflammation and clears the infection.
  • Skin and soft tissue infections: resolves bacterial skin infections and promotes healing.
  • Streptococcal pharyngitis: eradicates streptococcal bacteria causing sore throat.
  • Helicobacter pylori eradication: part of combination therapy to eradicate H. pylori infection.

How It Works

  • Clarithromycin inhibits bacterial protein synthesis by binding to the 50S ribosomal subunit, preventing translocation of the peptidyl‑tRNA. This blockade halts peptide chain elongation, producing a bacteriostatic effect against susceptible Gram‑positive and some Gram‑negative organisms, and contributes to the drug’s antibacterial activity. By interfering with the ribosomal machinery, clarithromycin also reduces toxin production in certain pathogens, enhancing clinical efficacy. The drug is primarily excreted unchanged in bile, allowing high tissue concentrations.

Side Effects

Clarithromycin may cause a range of adverse reactions, from mild gastrointestinal symptoms to rare serious events.

Common Side Effects

  • Nausea: mild gastrointestinal upset that may occur during therapy.
  • Diarrhea: loose stools, sometimes leading to dehydration.
  • Abdominal pain: cramping or discomfort in the stomach area.
  • Taste disturbance: altered taste perception, often described as metallic.

Serious or Rare Side Effects

  • Hepatotoxicity: elevated liver enzymes or liver injury requiring monitoring.
  • QT prolongation: cardiac rhythm disturbance that can precipitate arrhythmias.
  • Severe allergic reaction: anaphylaxis, rash, or angioedema demanding immediate medical attention.

Precautions & Warnings

When prescribing clarithromycin, clinicians should observe several safety precautions.

  • Renal impairment: monitor renal function and adjust therapy as needed.
  • Hepatic dysfunction: use caution in patients with liver disease and monitor liver enzymes.
  • Cardiac risk: avoid in patients with known QT prolongation or who are taking other QT‑prolonging drugs.
  • Drug interactions: review concomitant medications for potential CYP3A4 inhibition or induction.
  • Pregnancy: category B; prescribe only when benefit outweighs potential risk to the fetus.
  • Store at ambient temperature: keep in original container, protect from light and moisture.

Avoid Interactions

Clarithromycin interacts with several medicines through enzyme inhibition and other mechanisms.

Major Interactions (Avoid)

  • Simvastatin: increased risk of myopathy and rhabdomyolysis due to elevated statin levels.
  • Pimozide: elevated plasma concentrations can cause severe cardiac toxicity.
  • Carbamazepine: reduced efficacy as clarithromycin induces its metabolism.

Moderate Interactions (Monitor Closely)

  • Warfarin: enhanced anticoagulant effect; monitor INR closely.
  • Digoxin: increased serum concentration; monitor cardiac levels.
  • Oral contraceptives: reduced effectiveness; advise alternative contraception methods.

Frequently Asked Questions

Klacid contains clarithromycin, a macrolide antibiotic indicated for the treatment of community‑acquired pneumonia, acute bacterial sinusitis, skin and soft tissue infections, streptococcal pharyngitis, and as part of combination therapy for Helicobacter pylori eradication. It is used in adult patients when bacterial infection is confirmed or strongly suspected.

Clarithromycin works by binding to the bacterial 50S ribosomal subunit, blocking the translocation step of protein synthesis. This inhibition stops peptide chain elongation, leading to a bacteriostatic effect against susceptible organisms and reducing toxin production in certain pathogens, thereby helping to clear the infection.

The exact dosing regimen for Klacid is determined by the prescribing clinician based on the type and severity of infection, patient weight, renal and hepatic function, and other clinical factors. Healthcare professionals adjust the dose to achieve optimal therapeutic outcomes while minimizing risk.

Clarithromycin is classified as pregnancy category B, indicating that animal studies have not shown risk and there are no adequate human studies. It may be used during pregnancy only if the potential benefit justifies the potential risk to the fetus. Clarithromycin is excreted in breast milk; breastfeeding decisions should be made in consultation with a healthcare provider.

To order Klacid, submit an enquiry on the product page at gnhindia.com, specifying the required quantity. GNH India supplies hospitals, pharmacies and procurement teams across international markets. After the enquiry, the sales team will verify trade or institutional credentials, then provide pricing, availability, shipping details (including any cold‑chain requirements), and assist with import documentation.

Klacid (clarithromycin) belongs to the macrolide class, similar to azithromycin and erythromycin. Compared with azithromycin, clarithromycin generally has a broader spectrum against certain Gram‑positive organisms and a higher potential for drug‑drug interactions due to CYP3A4 inhibition. Choice between agents depends on local resistance patterns, patient tolerance, and specific infection characteristics.

Klacid should be stored at ambient temperature, below 25 °C, in its original packaging. Protect the solution from direct light, moisture, and extreme temperature fluctuations. Once reconstituted, follow the manufacturer’s guidance on stability and use within the recommended time frame to maintain potency.

Klacid is supplied as an intravenous solution and is administered by slow intravenous infusion under the supervision of qualified healthcare personnel. The infusion rate and duration are determined by the prescribing clinician based on the patient’s condition and the specific therapeutic protocol.

The most serious risks include hepatotoxicity, which may present as elevated liver enzymes or liver injury; QT‑interval prolongation that can lead to potentially life‑threatening arrhythmias; and severe hypersensitivity reactions such as anaphylaxis. Patients should be monitored for signs of liver dysfunction, cardiac rhythm changes, and allergic responses during therapy.

Klacid should be avoided in patients with known hypersensitivity to clarithromycin or other macrolide antibiotics. It is also contraindicated in individuals with a history of significant QT prolongation, those taking other strong QT‑prolonging drugs, and patients with severe hepatic impairment where the risk outweighs benefit. Clinical judgment is required for all other cases.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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