Infections caused by susceptible organisms (eg, chlamydia, rickettsia, brucella & Borrelia burgdorferi). Infections in the resp & genital mycoplasma, in acne, in destructive periodontal disease & for leptospirosis in penicillin allergy.
Adult Initially 100 mg bid. Maintenance 100 mg daily. Gonococcal & non-gonococcal infections 100 mg bid for 7 days. Usually, 200 mg on the 1st day (as single or in divided doses) followed by 100 mg daily. Sensitive gonococcal infections 100 mg bid for 7 days. Syphilis 200 mg-300 mg daily in divided doses for at least 15 or 10 days, respectively. Acne 50 mg daily. Relapsing fever & louse borne typhus 100 mg or 200 mg as single dose.
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