Infections caused by susceptible strains of rickettsiae; Mycoplasma pneumoniae; agents of psittacosis, ornithosis, lymphogranuloma venereum, and granuloma inguinale; Borrelia recurrentis; Haemophilus ducreyi; Pasteurella pestis; P. tularensis; Bartonella bacilliformis; Bacteroides; Vibrio cholerae; Vibrio comma; Vibrio fetus; Brucella; Escherichia coli; Enterobacter aerogenes; Shigella; Acinetobacter calcoaceticus; Haemophilus influenzae; Klebsiella; Diplococcus pneumoniae; Staphylococcus aureus; Streptococcus pyogenes; Streptococcus pneumoniae; Mycoplasma bacteria, Francisella tularensis, Lersinia pestis

When penicillin is contraindicated, infections caused by Neisseria gonorrhoeae, Treponema pallidum, T. pertenue, Listeria monocytogenes, Clostridium, Bacillus anthracis, Fusobacterium fusiforme, Actinomyces, Neisseria meningitidis

As an adjunct to amebicides in acute intestinal amebiasis

Treatment of acne or uncomplicated urethral, endocervical, or rectal infections in adults caused by Chlamydia trachomatis