Hi and Welcome to ehealth
This drug is used to treat UTI's
The other name for it is Macrobid. I would
call your pharmacist, ask them about this
medication and kidney infections.
Here's a link that explains this
medication:
http:
//www.mayoclinic.com/health/drug-informati
on/DR601017
Did the ER doctor tell you to follow up
with another doctor?
Did they scan your kidneys at all?