Farmakologik xususiyatlari
Keng ta'sir doirasiga ega antibiotik. Bakteriostatik ta'sir ko'rsatadi, bu esa oqsil sintezini to'xtatish orqali yuzaga keladi, transport RNK va ribosoma o'rtasida kompleks hosil bo'lishining buzilishi natijasida. Gram-musbat mikroorganizmlarga nisbatan faol: Staphylococcus spp. (shu jumladan Staphylococcus aureus, penitsillinaza ishlab chiqaruvchi shtammlar jumlasidan), Streptococcus pneumoniae, Listeria spp., Bacillus anthracis, Clostridium spp., Actinomyces israelii; gram-manfiy mikroorganizmlarga nisbatan: Haemophilus influenzae, Haemophilus ducreyi, Bordetella pertussis, Escherichia coli, Enterobacter spp. (shu jumladan Enterobacter aerogenes), Acinetobacter spp., Klebsiella spp., Salmonella spp., Shigella spp., Yersinia pestis, Francisella tularensis, Bartonella bacilliformis, Vibrio cholerae, Vibrio fetus, Rickettsia spp, Brucella spp. (streptomitsin bilan kombinatsiyada); penitsillinlar guruhi preparatlarini qo'llash mumkin bo'lmagan hollarda - Clostridium spp., Neisseria gonorrhoeae, Actinomyces spp; shuningdek Calymmatobacterium granulomatis, Chlamydia trachomatis, Chlamydia psittaci, Mycoplasma pneumoniae, Treponema spp., Entamoeba spp.ga nisbatan faol. Tetratsiklinga Pseudomonas aeruginosa, Proteus spp., Serratia spp., Bacteroides fragilisning ko'pchilik shtammlari, ko'pchilik zamburug'lar, viruslar, Streptococcus pyogenes, Streptococcus faecalis chidamli.