Ampicllin/amoxycillin – for haemophillus and other gram-negative organisms
1st generation e.g. cephalexin – very active against gram-positive cocci
2nd generation e.g. cefuroxime – additional activity against H. influenza, M. catarrhalis, N. menigitidis and Gonorrhoea.
3rd generation – active against gram-negative bacilli. Some e.g. ceftazadime are active against pseudomonads as well.
(another B lactam antibiotic) – active against a wide range of bacteria
Its is most useful against ESBL organisms
Streptomycin, gentamycin, kanamycin, amikacin
Used against gram-negative bacilli including pseudomonads
Used against anaerobes and certain parasitic infections
7. Erthromycin and other macrolides
Used mainly as a second line drug for penicillin. Used first line for legionella and sometimes for chlamydial and mycoplasmal infections
Clindamycin is mainly used in the treatment of anaerobic infections.
For MRSA infections
Tetracycline and doxyclyine are used for a wide variety of bacterial, chlamydial, and rickettsial infections
Sulphonamides are often used in conjunction with trimethroprim. It is used for treating UTI and respiratory infections
Ciprofloxacin and Ofloxacin are active against a large umber of gram-negative bacilli including P. aeruginosa.