Klaricid - Dosage | Use | Side Effects

This article was medically reviewed by M.Pharm, Marko Tanaskovic on August 12, 2018. To read more about an author, click here.

Klaricid is the medication from the group of antibiotics (more specifically macrolide antibiotics). Active ingredient of Klaricid is clarithromycin, which acts by destroying bacteria cell wall.

Klaricid is used to treat pneumonia, sinusitis, pharyngitis, a bacterial bronchitis, tonsillitis. Klaricid is also used for eradication of Helicobacter Pylori.


Klaricid should be avoided in the following patients:

  • Patients with diabetes, especially if they are using diabetes medications.
  • Patients with high cholesterol, especially if they are taking high cholesterol medicines, such as:
    • fluvastatin,
    • lovastatin,
    • pravastatin,
    • simvastatin,
    • rosuvastatin and other similar medications.
  • Patients with migraine, especially if they are using medicines to treat migraines, such as: dihydroergotamine.
  • Patients with heart diseases.
  • Patients with hypokalemia (low potassium levels in the blood).
  • Patients with kidney disorders
  • Patients with liver disorders
  • Pregnant and breastfeeding woman
  • Patients under the age of 12

Use of alcoholic beverages and Klaricid is strictly prohibited.

Klaricid use during pregnancy and breastfeeding

Klaricid should not be used during pregnancy and breastfeeding, because safety of its use during pregnancy has not be proven yet.

Small amounts of Klaricid may get into breast milk which may cause adverse effects in breastfeed infants. Avoid breastfeeding while using Klaricid tablets. You can start breastfeeding your baby again 48 hours after you stop taking Klaricid tablets.

Dosage regimen

Klaricid should be taken at a dose of 250 mg, 2 times daily for 7-14 days, to treat sinusitis, tonsillitis, pneumonia, bronchitis, pharyngitis. If needed, the dose can be increased up to 500 mg used twice daily.

Klaricid is usually taken at a dose of 500 mg three times a day to treat stomach or duodenal ulcers infections (caused by bacteria called Helicobacter Pylori). In order to eradicate H.Pylori it is recommended to take this medicine at least two weeks.

Klaricid can be taken with or without meal.

Klaricid and its interactions with drugs and food

Klaricid should not be used simultaneously with following medications:

  • Cisapride, medicine used to treat stomach disorders. Simultaneously use of these two medicines can cause dangerous heart arrhythmia.
  • Pimozide, medicine used to treat mental disorders. Simultaneously use of these two medicines can cause dangerous heart arrhythmia.
  • Astemizole and terfenadine, used to treat allergy. Simultaneously use with these medicines can cause dangerous heart arrhythmia.
  • Medicines used to treat epilepsy, such as: valproic acid, carbamazepine, phenytoin, phenobarbital.
  • Tranquilizers, such as: midazolam, alprazolam.
  • Medicines used to treat AIDS (HIV infection) such as: saquinavir, ritonavir, efavirenz, and others.
  • Medicines used to treat inflammatory disorders: dexamethasone, methylprednisolone, prednisolone.
  • Medicines used to treat impotence in men: such as sildenafil (Viagra), tadalafil, and others.
  • St. John's Wort.

Tell your doctor about all medications, over the counter medications, vitamins and herbal remedies you are taking.

Side effects

Klaricid can cause the following side effects:

  1. muscle pain,
  2. joint pain,
  3. abdominal pain,
  4. liver damage (jaundice-yellowing of the skin and eyes, dark urine, loss of appetite),
  5. hearing loss,
  6. tinnitus,
  7. nausea,
  8. vomiting,
  9. diarrhea (can be followed with blood in the stool),
  10. allergies (signs of allergy include: rash, itching, redness, swelling, anaphylactic shock),
  11. increased sweating,
  12. dizziness,
  13. nervousness,
  14. headaches,
  15. mood changes,
  16. inflammation of the pancreas,
  17. change of tongue and teeth color and others.

If you are experiencing any of above mentioned adverse effects, contact your doctor right away.

Information on this website are provided for educational purposes only and are not intended for medical advice, diagnosis or treatment.

If you have any concerns or questions about your health, you should always consult with a physician or other health-care professional.

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