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Usual adult dosage (including elderly patients): Ear, nose and throat infections: 250 mg four times a day.
Bronchitis: Routine therapy: 250 mg four times a day. High-dosage therapy: 1 g four times a day.
Pneumonia: 500 mg four times a day.
Urinary tract infections: 500 mg three times a day.
Gonorrhoea: 2 g orally with 1 g probenecid as a single dose. Repeated doses are recommended for the treatment of females.
Gastro-intestinal infections: 500-750 mg three to four times daily.
Enteric fever: Acute: 1-2 g four times a day for two weeks.
Usual children's dosage (under 10 years): Half adult routine dosage.
All recommended dosages are a guide only. In severe infections the above dosages may be increased, or ampicillin should be given by injection. Oral doses of Reichlin should be taken half to one hour before meals.
Renal Impairment: In the presence of severe renal impairment (creatinine clearance <10 ml/min) a reduction in dose or extension of dose interval should be considered. In cases of dialysis, an additional dose should be administered after the procedure.
