Clarithromycin is indicated for the treatment of infections due to susceptible organisms. Such infections include:
1. Lower respiratory tract infections (e.g. bronchitis, pneumonia).
2. Upper respiratory tract infections (e.g. pharyngitis, sinusitis).
3. Skin and soft tissue infections (e.g. folliculitis, cellulitis, erysipalis).
4. Disseminated or localised mycobacterial infections due to Mycobacterium avium or Mycobacterium intracellulare. Localised infections due to Mycobacterium chelonae, Mycobacterium fortuitum or Mycobacterium kansasii.
5. Clarithromycin is indicated for the prevention of disseminated Mycobacterium avium complex infection in HIV - infected patients with CD4 lymphocyte counts less than or equal to 100/mm3.
6. Clarithromycin in the presence of acid suppression is indicated for the eradication of H.pylori, resulting in decreased recurrence of duodenal ulcer. (See further information).
Clarithromycin tablets are indicated in adults and children 12 years and older.
Consideration should be given to official guidance on the appropriate use of antibacterial agents.
Further Information: H. pylori is strongly associated with peptic ulcer disease. Ninety to 100% of patients with duodenal ulcers are infected with this agent. Eradication of H.pylori has been shown to markedly reduce the rate of duodenal ulcer recurrence, thereby reducing the need for maintenance anti-secretory therapy.
In a well controlled double-blind study, H.pylori infected patients with duodenal ulcer received clarithromycin 500mg TID for 14 days with omeprazole 40mg daily for 28 days.
Clarithromycin has been used in other treatment regimens for the eradication of H.pylori. These regimens include: clarithryomycin plus tinidazole and omeprazole; and clarithromycin plus tetracycline, bismuth subsalicylate, and ranitidine.
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