2 doctors weighed in:

I have been prescribed 50mg nitrofurantoin for 3 days (12tabs) for a uti. I have already taken 4 and feel no different, is this normal?

2 doctors weighed in
Dr. George Klauber
Pediatrics - Urology
1 doctor agrees

In brief: Yes, but 50mg is low

Symptoms may take 2 - 3 days to subside.
Most dr.S prescribe 100mg 3 or 4x a day, or Macrobid 100 mg twice a day. Need to get urine rechecked if symptoms persisit more than 3 days because infecting organism may not be sensitive to macrodantin. In which case another antibiotic like Bactrim or Cipro (ciprofloxacin) may be necessary. Suggest urine culture & sensitivity test is performed if infection still present.

In brief: Yes, but 50mg is low

Symptoms may take 2 - 3 days to subside.
Most dr.S prescribe 100mg 3 or 4x a day, or Macrobid 100 mg twice a day. Need to get urine rechecked if symptoms persisit more than 3 days because infecting organism may not be sensitive to macrodantin. In which case another antibiotic like Bactrim or Cipro (ciprofloxacin) may be necessary. Suggest urine culture & sensitivity test is performed if infection still present.
Dr. George Klauber
Dr. George Klauber
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