CLARIDAY 500 Tablet is an antibiotic used to treat various types of infections. It is effective in most infections of the respiratory tract, ear, nose, throat, lungs, and skin. It is also effective against a bacteria known as H. pylori, which is associated with peptic ulcer disease. CLARIDAY-500 Tablet is also effective against some infections (e.g., MAC or Mycobacterium avium complex) seen in people with reduced immunity. It stops the bacteria from growing, which helps to resolve your symptoms and cure your infection. This medicine is taken orally, preferably either one hour before or 2 hours after a meal. No antacids should be taken within 2 hours of taking this medicine. It should be used regularly at evenly spaced time intervals as prescribed by your doctor. Do not skip any doses and finish the full course of treatment even if you feel better. Stopping the medicine too early may lead to the infection returning or worsening. Common side effects with this medicine include diarrhea, nausea, abnormal taste, indigestion, abdominal pain, headache, vomiting, and rash. These are usually temporary and subside with the completion of treatment. Consult your doctor if you find these side effects do not resolve or persist for a longer duration. Inform your doctor if you have any previous history of allergy or heart problems before taking this medicine. Pregnant or breastfeeding women should consult their doctor before using this medicine.