Cephradine is a cephalosporin antibiotic with broad spectrum bactericidal activity against both gram-positive and gram-negative bacteria. Cephradine interferes with the synthesis of bacterial cell wall by inhibiting transpeptidase enzyme. As a result the bacterial cell wall is weakened, the cell swells and then ruptures.
Polycef IV/IM Injection 500 mg
Oral: The usual dose is 1-2 gm daily in 2 to 4 divided doses. In severe and prolonged infection, the dose can be increased up to 4 gm daily which should be taken in equally divided doses.
Injection: The usual dose is 2-4 gm daily which should be given intramuscularly or intravenously in 3-4 divided doses.
Special dose in the following infections:
Skin and skin structures and respiratory tract infection: Usual dose is 250 mg every 6 hours or 500 mg every 12 hours.
Lobar pneumonia: 500 mg every 6 hours or 1 gm every 12 hours.
Urinary tract infection: Usual dose is 500 mg every 12 hours.
Gastro-intestinal tract infection: 500 mg three to four times daily.
Oral: The usual total dose is 25 to 50 mg/kg/day given in 2 to 4 equally divided doses.
Injection: 50 to 100 mg/kg/day in 4 equally divided doses. The usual total dose may be increased up to 200-300 mg/kg/day.
Perioperative prophylaxis: Recommended dose is 1-2 gm by intramuscular or intravenous route; subsequent parenteral or oral doses are given as
appropriate. Therapy should be continued for a minimum of 48-72 hrs. after the patient
becomes asymptomatic or evidence of bacterial eradication has been obtained.