Other antibacterial drugs
Azithromycin (Dihydrate) 500 mg
3F.C.Tablets - 6F.CTablets
T89
3/2012
4/1/2012
Excipients | Dibasic calcium phosphate anhydrous , Pregelatinizied starch , Sodium croscarmellose , Magnesium stearate , Sodium lauryl sulfate , Hydroxypropyl methylcellulose , Lactose ,Titanium dioxide , Triacetin |
Mechanism Of Action | Azithromycin acts by binding to the S50 ribosomal subunit of susceptible microorganisms and, thus, interfering with microbial protein synthesis. Nucleic acidsynthesis is not affected. Azithromycin has been shown to be active against most strains of the following microorganisms, both in vitro and in clinical infections as described in the: 1-Gram-Positive Aerobes: Staphylococcus aureus. Streptococcus agalactiae. Streptococcus pneumoniae. Streptococcus pyogenes. NOTE: Azithromycin demonstrates cross-resistance with erythromycin-resistant gram-positive strains. Most strains of Enterococcus faecalis and methicillin-resistant staphylococci are resistant to azithromycin. 2-Gram-Negative Aerobes: Haemophilusducreyi. Haemophilusinfluenzae. Moraxella catarrhalis. Neisseria gonorrhoeae. “Other” Microorganisms: Chlamydia pneumoniae. Chlamydia trachomatis. Mycoplasma pneumoniae. NOTE: Beta-lactamase production should have no effect on azithromycin activity. |
INDICATIONS | (Azithromycin) is indicated for the treatment of patients with mild to moderate infections caused by susceptible strains of the designated microorganisms in the specific conditions listed below. Adults: Acute Bacterial Exacerbations of Chronic Obstructive Pulmonary Disease: Due to Haemophilusinfluenzae, Moraxella catarrhalis, or Streptococcuspneumoniae. Community-Acquired Pneumonia: Due to Chlamydiapneumoniae, Haemophilusinfluenzae, Mycoplasmapneumoniae, or Streptococcuspneumoniae in patients appropriate for oral therapy. Pharyngitis/Tonsillitis: Caused by Streptococcuspyogenes as an alternative to first-line therapy in individuals who cannot use first-line therapy. Uncomplicated Skin and Skin Structure Infections: Due to Staphylococcusaureus, Streptococcuspyogenes, or Streptococcusagalactiae. Abscesses usually require surgical drainage. Urethritis and Cervicitis: Due to Chlamydia trachomatis or Neisseriagonorrhoeae. Genital Ulcer Disease: In men due to Haemophilusducreyi (chancroid). Pediatric Patients: Acute Otitis Media: Caused by Haemophilusinfluenzae, Moraxella catarrhalis, or Streptococcuspneumoniae. Community-Acquired Pneumonia: Due to Chlamydiapneumoniae, Haemophilusinfluenzae, Mycoplasmapneumoniae, or Streptococcuspneumoniae in patients appropriate for oral therapy Pharyngitis/Tonsillitis: Caused by Streptococcuspyogenes as an alternative to first-line therapy in individuals who cannot use first-line therapy. |
CONTRAINDICATIONS | Zitromaxine (Azithromycin) is contraindicated in patients with known hypersensitivity to azithromycin, erythromycin, or any macrolide antibiotic. |
Side EFFECTS | The most common side effects are related to the gastrointestinal tract, such as nausea, vomiting, diarrhea, or abdominal pain. Allergic reactions, headache, dizziness, palpitations, and chest pain may also occur. Potentially serious side effects of angioedema and cholestatic jaundice are very rare. |
WARNINGS | Serious allergic reactions have been reported rarely in patients on azithromycin therapy. If an allergic reaction occurs, the drug should be discontinued and appropriate therapy should be instituted. In the treatment of pneumonia, azithromycin has only been shown to be safe and effective in the treatment of community-acquired pneumonia due to Chlamydiapneumoniae, Haemophilusinfluenzae, Mycoplasmapneumoniae, or Streptococcuspneumoniae in patients appropriate for oral therapy. Azithromycin should not be used in patients with pneumonia who are judged to be inappropriate for oral therapy because of moderate to severe illness or risk factors such as any of the following: patients with cystic fibrosis, patients with nosocomially acquired infections, patients with known or suspected bacteremia, patients requiring hospitalization, elderly or debilitated patients, or patients with significant underlying health problems including immunodeficiency or functional asplenia. Pseudomembranous colitis has been reported with nearly all antibacterial agents and may range in severity from mild to life-threatening. Therefore, it is important to consider this diagnosis in patients who present with diarrhea subsequent to the administration of antibacterial agents. Treatment with antibacterial agents alters the normalflora of the colon and may permit overgrowth of clostridia. Studies indicate that a toxin produced by Clostridium difficile is a primary cause of “antibiotic-associated colitis.” Because azithromycin is principally eliminated via the liver, caution should be exercised when azithromycin is administered to patients with impaired hepatic function. Caution should also be exercised when prescribing azithromycin in patients with renal impairment.The following adverse events have not been reported in clinical trials with azithromycin, an azalide; however, they have been reported with macrolide products: ventricular arrhythmias, including ventriculartachycardia in individuals with prolonged QT intervals. |
DRUG INTERACTIONS | Aluminum and magnesium containing antacids reduce the peak serum levels (rate) but not the AUC (extent) of azithromycin absorption. Concurrent use of macrolides and theophylline has been associated with increases in the serum concentrations of theophylline. Concurrent use of macrolides and warfarin is may be associated with increased anticoagulant effects. Careful monitoring of patients is advised when the following drugs used with Azithromycin concomitantly: Digoxin: Elevated digoxin levels. Ergotamine or Dihydroergotamine: Acute ergot toxicity characterized by severe peripheralvasospasm and dysesthesia. Triazolam: Decrease the clearance of triazolam and thus may increase the pharmacologic effect of triazolam. Drugs Metabolized by the Cytochrome P450System: Elevations of serum carbamazepine, terfenadine, cyclosporine, hexobarbital, and phenytoin levels. Drug \ Clinical Laboratory Test Interactions: Reversible elevated serumcreatine phosphokinase, potassium, ALT (SGPT), GGT, and AST (SGOT); with an incidence of less than 1%, leukopenia, neutropenia, decreased platelet count, elevated serumalkaline phosphatase, bilirubin, BUN, creatinine, blood glucose, LDH, and phosphate. In pediatric use no laboratory tests interactions were reported. |
Pregnancy And lactations | Pregnancy: there are no adequate data from the use of azithromycin in pregnant women. the safety of azithromycin has not been confirmed during pregnancy. therefore azithromycin should only be used during pregnancy if the benefit outweighs the risk. Lactation:it is not known whether azithromycin is excreted in breast milk , there are no adequate and well- controlled clinical studies in nursing women therefor azithromycin should only be used in lactating women where adequate alternatives are not available and with caution |
Dosage And Administration | Zitromaxine tablets: Zitromaxine– 500 mg F.C.tablets should be administrated as a single daily dose with orwithout food. For all indications or than sexually transmitted diseases, the total dose is 1.5 g which should be given as 500 mg (one F.C.tablet) daily for three days. For sexually transmitted diseases caused by Chlamydia trachomatis the dose is 1 g given as a single dose. Zitromaxinecapsules: Azithromycine – 250 mg capsules should be given at least 1 hour before or 2 hours after a meal. Azithromycinecapsules shouldn't be taken with food. The recommended dose of azithromycin for the treatment of mild to moderate acute bacterial exacerbations of chronic obstructive pulmonary disease, community-aqcuired pneumonia of mild severity, pharyngitis/tonsillitis (as second- line therapy ), and uncomplicated skin and skin structure infections due to the indicated organisms (is 500 mg) as a single dose on the first day followed by 250 mg once daily on days 2 through 5. The recommended dose of azithromycin for thetreatment of genital ulcer disease due to Haemophilusducreyi (chancroid), non-gonococcal urethritis and cervicitis due to C.trachomatis is : asingle 1 gram dose of azithromycin 2 F.C.tablets of Zitromaxine-500 mg) The recommended dose of azithromycin for treatment of urethritis and cervicitis due to Neisseria gonorrhoeae is a signal 2 gram (2000 mg) dose of azithromycin 4 F.C.tablets of Zitromaxine-500 mg |
Storage Conditions | Store below 25° C in dry place |