Furadantin Dosage
Generic name: nitrofurantoin
Dosage form: oral suspension
This dosage information does not include all the information needed to use Furadantin safely and effectively. See full prescribing information for Furadantin.
The information at Drugs.com is not a substitute for medical advice. ALWAYS consult your doctor or pharmacist.
Furadantin should be given with food to improve drug absorption and, in some patients, tolerance.
Adults
50-100 mg four times a day -- the lower dosage level is recommended for uncomplicated urinary tract infections.
Pediatric Patients
5-7 mg/kg of body weight per 24 hours, given in four divided doses (contraindicated under one month of age).
The following table is based on an average weight in each range receiving 5 to 6 mg/kg of body weight per 24 hours, given in four divided doses. It can be used to calculate an average dose of Furadantin Oral Suspension (25 mg/5mL) for pediatric patients (one 5-mL teaspoon of Furadantin Oral Suspension contains 25 mg of nitrofurantoin):
| Body Weight | No. Teaspoonfuls | |||
|---|---|---|---|---|
| Pounds | Kilograms | 4 Times Daily | ||
| 15 to 26 | 7 to 11 | 1/2 (2.5 mL) | ||
| 27 to 46 | 12 to 21 | 1 (5 mL) | ||
| 47 to 68 | 22 to 30 | 1 1/2 (7.5 mL) | ||
| 69 to 91 | 31 to 41 | 2 (10mL) | ||
Therapy should be continued for one week or for at least 3 days after sterility of the urine is obtained. Continued infection indicates the need for reevaluation.
For long-term suppressive therapy in adults, a reduction of dosage to 50-100 mg at bedtime may be adequate. For long-term suppressive therapy in pediatric patients, doses as low as 1 mg/kg per 24 hours, given in a single dose or in two divided doses, may be adequate. SEE WARNINGS SECTION REGARDING RISKS ASSOCIATED WITH LONG TERM THERAPY.
