Vantin 100 mg tablets is a semi-synthetic broad-spectrum antibiotic of cephalosporin group with bactericidal effect. It is active against many gram positive, aerobic and anaerobic microorganisms. Vantin 200 is resistant to to beta-lactamase. Insusceptible to the medication are Streptococcus of D group; Staphylococcus resistant to meticyllin; Corynebacterium of J and K group; Pseudomonas (Pseudomonas aeruginosa); Listeria monocytogenes, Acinetobacter baumanii, Clostridium difficile and Bacteroides. Vantin is used to treat illnesses of upper respiratory system caused by the susceptible bacteria including tonsillitis, pharyngitis, acute sinusitis, acute bronchitis, pneumonia, exacerbation of chronic pneumonia especially in alcohol abusers, smokers and adults older than 65 y.o. Vantin 100 mg tablets is sometimes given with other antibiotics and as injections to prevent infections before, during, and after surgery.