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RX BIN: 015558
Group ID: DDN6600
Card Holder ID: DDN6600

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2018 Price of Clarithromycin

Clarithromycin 100% powder



* price without discount in nearest pharmacy. Price may vary.

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What is Clarithromycin

Clarithromycin, a semisynthetic macrolide antibiotic derived from erythromycin, inhibits bacterial protein synthesis by binding to the bacterial 50S ribosomal subunit. Binding inhibits peptidyl transferase activity and interferes with amino acid translocation during the translation and protein assembly process. Clarithromycin may be bacteriostatic or bactericidal depending on the organism and drug concentration.

Clarithromycin mechanism of action

Clarithromycin is first metabolized to 14-OH clarithromycin, which is active and works synergistically with its parent compound. Like other macrolides, it then penetrates bacteria cell wall and reversibly binds to domain V of the 23S ribosomal RNA of the 50S subunit of the bacterial ribosome, blocking translocation of aminoacyl transfer-RNA and polypeptide synthesis. Clarithromycin also inhibits the hepatic microsomal CYP3A4 isoenzyme and P-glycoprotein, an energy-dependent drug efflux pump.

Dosage forms of Clarithromycin

Form Route Strength
Granules for suspension oral 125 mg
Granules for suspension oral 250 mg
Granule, for suspension oral 250 mg/5mL
Prescription Generics


International Brands



6-O-methyl erythromycin 6-O-Methylerythromycin


Accel Pharma Inc

CAS number






Affected organisms

Enteric bacteria and other eubacteria

Indication of Clarithromycin

An alternative medication for the treatment of acute otitis media caused by iH. influenzae, M. catarrhalis, or S. pneumoniae /i in patients with a history of type I penicillin hypersensitivity. Also for the treatment of pharyngitis and tonsillitis caused by susceptible iStreptococcus pyogenes /i, as well as respiratory tract infections including acute maxillary sinusitis, acute bacterial exacerbations of chronic bronchitis, mild to moderate community-acquired pneuomia, Legionnaires’ disease, and pertussis. Other indications include treatment of uncomplicated skin or skin structure infections, helicobacter pylori infection, duodenal ulcer disease, bartonella infections, early Lyme disease, and encephalitis caused by iToxoplasma gondii /i (in HIV infected patients in conjunction with pyrimethamine). Clarithromycin may also decrease the incidence of cryptosporidiosis, prevent the occurence of .-hemolytic (viridans group) streptococcal endocarditis, as well as serve as a primary prevention for iMycobacterium avium /i complex (MAC) bacteremia or disseminated infections (in adults, adolescents, and children with advanced HIV infection).

Toxicity of Clarithromycin

Symptoms of toxicity include diarrhea, nausea, abnormal taste, dyspepsia, and abdominal discomfort. Transient hearing loss with high doses has been observed. Pseudomembraneous colitis has been reported with clarithromycin use. Allergic reactions ranging from urticaria and mild skin eruptions to rare cases of anaphylaxis and Stevens-Johnson syndrome have also occurred. Rare cases of severe hepatic dysfunctions also have been reported. Hepatic failure is usually reversible, but fatalities have been reported. Clarithromycin may also cause tooth decolouration which may be removed by dental cleaning. Fetal abnormalities, such as cardiovascular defects, cleft palate and fetal growth retardation, have been observed in animals. Clarithromycin may cause QT prolongation.

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