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Clarithromycin is a macrolide antimicrobial indicated for mild to moderate infections caused by designated, susceptible bacteria in the following: Acute Bacterial Exacerbation of Chronic Bronchitis in Adults (1.1) Acute Maxillary Sinusitis (1.2) Community-Acquired Pneumonia (1.3) Pharyngitis/Tonsillitis (1.4) Uncomplicated Skin and Skin Structure Infections (1.5) Acute Otitis Media in Pediatric Patients (1.6) Treatment and Prophylaxis of Disseminated Mycobacterial Infections (1.7) Helicobacter pylori Infection and Duodenal Ulcer Disease in Adults (1.8) Limitations of Use To reduce the development of drug-resistant bacteria and maintain the effectiveness of clarithromycin and other antibacterial drugs, clarithromycin should be used only to treat or prevent infections that are proven or strongly suspected to be caused by bacteria. (1.9) 1.1 Acute Bacterial Exacerbation of Chronic Bronchitis Clarithromycin tablets, USP are indicated in adults for the treatment of mild to moderate infections caused by susceptible isolates due to Haemophilus influenzae , Haemophilus parainfluenzae , Moraxella catarrhalis , or Streptococcus pneumoniae [see Indications and Usage (1.9) ] . 1.2 Acute Maxillary Sinusitis Clarithromycin tablets, USP are indicated for the treatment of mild to moderate infections caused by susceptible isolates due to Haemophilus influenzae , Moraxella catarrhalis , or Streptococcus pneumoniae [see Indications and Usage (1.9) ] . 1.3 Community-Acquired Pneumonia …

Hypersensitivity to clarithromycin or any macrolide drug (4.1) Cisapride and pimozide (4.2) History of cholestatic jaundice/hepatic dysfunction with use of clarithromycin (4.3) Colchicine in renal or hepatic impairment (4.4) Lomitapide, lovastatin, and simvastatin (4.5) Ergot alkaloids (ergotamine or dihydroergotamine) (4.6) Lurasidone (4.7) 4.1 Hypersensitivity Clarithromycin is contraindicated in patients with a known hypersensitivity to clarithromycin, erythromycin, or any of the macrolide antibacterial drugs [see Warnings and Precautions (5.1) ] . 4.2 Cisapride and Pimozide Concomitant administration of clarithromycin with cisapride and pimozide is contraindicated [see Drug Interactions (7) ] . There have been postmarketing reports of drug interactions when clarithromycin is co-administered with cisapride or pimozide, resulting in cardiac arrhythmias (QT prolongation, ventricular tachycardia, ventricular fibrillation, and torsades de pointes ) most likely due to inhibition of …

Severe Acute Hypersensitivity Reactions: Discontinue clarithromycin if occurs (5.1) QT Prolongation: Avoid clarithromycin in patients with known QT prolongation or receiving drugs known to prolong the QT interval, ventricular arrhythmia ( torsades de pointes ), hypokalemia/hypomagnesemia, significant bradycardia, or taking Class IA or III antiarrhythmics (5.2) Hepatotoxicity: Discontinue if signs and symptoms of hepatitis occur (5.3) Serious adverse reactions can occur due to drug interactions of clarithromycin with colchicine, some lipid-lowering agents, some calcium channel blockers, and other drugs (5.4) Risk of all-cause mortality one year or more after the end of treatment in patients with coronary artery disease. Balance this potential risk with the treatment benefits when prescribing clarithromycin tablets in these patients. (5.5) Clostridium difficile associated diarrhea (CDAD): Evaluate if diarrhea occurs (5.6) Embryo-Fetal Toxicity : Based on animal findings, clarithromycin is not recommended for use in pregnant women except in clinical circumstances where no alternative therapy is appropriate (5.7) Exacerbation of myasthenia gravis has been reported in patients receiving clarithromycin therapy. (5.8) 5.1 Severe Acute Hypersensitivity Reactions In the event of severe acute hypersensitivity reactions, such as anaphylaxis, Stevens-Johnson Syndrome, toxic epidermal necrolysis, drug rash with eosinophilia and systemic symptoms (DRESS), Henoch-Schonlein purpura, and …

8.1 Pregnancy Risk Summary Based on findings from animal studies, clarithromycin is not recommended for use in pregnant women except in clinical circumstances where no alternative therapy is appropriate. If pregnancy occurs while taking clarithromycin, the patient should be apprised of the potential hazard to the fetus [see Warnings and Precautions (5.7) ] . Limited data from a small number of published human studies with clarithromycin use during pregnancy are insufficient to inform drug-associated risks of major birth defects, miscarriage, or adverse maternal or fetal outcomes. In animal reproduction studies, administration of oral clarithromycin to pregnant mice, rats, rabbits, and …