If you suspect your child has a UTI, PLEASE do not try to treat them with cranberry juice. Cranberry juice most likely will not be enough to treat a full blown UTI.
Untreated UTI can result in the infection migrating up the ureters and into the kidneys. As a most extreme example, untreated UTI can also end in the complication called Urosepsis. Urosepsis is the urinary infection that travels to the bloodstream and can cause complications ranging from shock to organ failure to death.
I am an RN and I was idiot enough to think my daughter could relieve herself of what I assumed was a UTI by drinking cranberry juice. I truly should have known better...
One week later she had no symptoms and I assumed that it resolved. I was wrong. It was brewing in her bladder behind the scenes until it migrated up to her kidney. It wasn't until she was quite ill that I realized how serious this way. ER x3, IV antibiotics x2 in ER, two different oral antibiotics. Our family doctor finally listened to me and immediately made arrangements for hospital admission when she began to have symptoms of Meningitis. 3 1/2 days of two potent IV antibiotics eradicated the pyelonephritis infection fortunately. Perhaps if I was a less diligent parent or perhaps a lay person, not a nurse, could have ended in dire circumstances for my daughter.
Granted, this is an extreme case but I just wanted to illustrate how dangerous untreated UTI can be.
Please, if you think your child has symptoms of a UTI take them in to be evaluated. There is no way of knowing the extent of a UTI without proper testing. As well, sometimes an irritation may
feel like a UTI. A UTI may have minimal symptoms so it can be hard to know. A simple clean catch urine sample and test dip strip can show the presence of bacteria and white/red blood cells. The doctor will then most likely perform a culture. Final results take 48 hours. Many doctors will start the patient on an antibiotic in the interim (until the drug sensitivity results are in).
Use Cranberry juice for PREVENTION of UTI, not for treatment.
(stepping off my soapbox now
)