Farmakologik xususiyatlari
Ampitsillin – yarim sintetik penisillinlar guruhiga mansub keng ta'sir doirasiga ega antibiotik. Bakteritsid ta'sir ko'rsatadi, mikroorganizmlarning hujayra devori sintezini bostiradi. Penisillinaza ta'sirida parchalanadi. Kislotaga chidamli. Quyidagi mikroorganizmlar preparatga doimiy sezgir: Streptococci A, B, C, F, G, Str. pneumoniae, penisillinaza ishlab chiqarmaydigan; L. monocytogernes, Corynebacterium diphtheriae, Erysipelotrix rhusopatiae, Eikenelia, N. meningitidis, Bordetella pertussis, Clostridium spp., Propioniobacterium acnes, Peptostreptococcus spp., Actinomyces spp., Leptospira spp., Treponema; doimiy sezgir emas: Enterococcus faecalis, E. Coli, Proteus mirabilis, Salmonella spp., Vibrio cholerae, H. Influenzae, N. gonorrhoeae, Fusobacterium spp., Prevotella. Preparatga chidamli: Staphylococcus spp., B. catarrhalis, Klebsiella spp., Enterobacter spp., C. diversus, C. freundii, Proteus vulgaris, Providencia rettgeri, Morganella motanii, Y. enterocolitica, Pseudomonas spp., Acinetabacter spp., Xanthomonas spp., Flavobacterium spp., Alcaligenes spp., Nocardia spp., Campylobacter spp., Legionella pneumophila, Mycobacterium spp., Bacteroides spp., Mycoplasma spp., Chlamydia spp.