How long does it take antibiotics to work for a UTI?

Learn how they work, and how your doctor decides which meds and dose to give you. ... Which antibiotic you get and how long you take it depend on two things: what kind of bacteria caused your infection and how severe your UTI is. ... Your doctor will take a urine sample to confirm that you have a UTI. read more

The antibiotics which typically work on the e.coli bacteria causing the UTIs are: Fosfomycin; Ciprofloxacin; Levofloxacin; Nitrofurantoin; These UTI antibiotics work directly on the bacteria that cause the infection and clear it within 3 to 5 days. read more

It depends on the severity of the UTI and whether the bacteria causing it are resistant to the antibiotic. I personally have felt better after only one dose. But some bugs are harder to kill than others. read more

Your doctor will let you know. Typically, for an uncomplicated infection, you'll take antibiotics for 2 to 3 days. Some people will need to take these medicines for up to 7 to 10 days. For a complicated infection, you might need to take antibiotics for 14 days or more. read more