Urinary tract infections (UTI) are caused by germs, usually bacteria that enter the urethra, then the bladder. This can lead to infection, most commonly in the bladder itself. At times, the infection can spread to the kidneys.
Most likely, your symptoms include foul or strong urine odor, pain or burning when you urinate, and a strong need to empty your bladder. These symptoms should improve soon after you begin taking antibiotics.
If you are feeling ill, have a low-grade fever, or some pain in your lower back, these symptoms will take 1 - 2 days to improve, and up to 1 week to go away completely.
Taking Your Medicines
You will be given antibiotics to be taken by mouth at home.
For a simple bladder infection, you will take antibiotics for 3 days (women). For a bladder infection with complications such as pregnancy or diabetes, or a mild kidney infection, you will usually take antibiotics for 7 - 14 days.
It is important that you take all of the antibiotics, even if you feel better. If you do not finish all of your antibiotics, the infection could return and may be harder to treat.
Antibiotics may cause side effects, such as nausea or vomiting, diarrhea, and other symptoms. Report these to your doctor, and do not just stop taking the pills.
Make sure your doctor knows if you could be pregnant before starting the antibiotics.
Your doctor may also give you a drug to relieve the burning pain and urgent need to urinate. Phenazopyridine hydrochloride (Pyridium) is the most common type of this drug.
Your urine will have an orange or red color to it when you are taking this drug.
You will still need to take antibiotics.
Preventing Future Urinary Tract Infections
Changes in bathing or hygiene may help prevent some UTIs:
Choose sanitary pads instead of tampons, which some doctors believe make infections more likely. Change the pad each time you use the bathroom.
Do not douche or use feminine hygiene sprays or powders. As a general rule, do not use any product containing perfumes in the genital area.
Take showers instead of baths. Avoid bath oils.
Keep your genital area clean. Clean your genital and anal areas before and after sexual activity.
Wipe from front to back after using the bathroom.
Urinate before and after sexual activity.
Avoid tight-fitting pants. Wear cotton-cloth underwear and pantyhose, and change both at least once a day.
Drink plenty of fluids (2 - 4 quarts each day).
Drink cranberry juice or use cranberry tablets, but NOT if you have a personal or family history of kidney stones.
Do NOT drink fluids that irritate the bladder, such as alcohol and caffeine.
Also, ask your doctor about:
Using estrogen cream in the vagina area if you have dryness caused by menopause, to reduce the chance of further infections
Having antibiotics at home to treat simple urinary tract infections yourself
See or call your health care provider after you finish taking antibiotics to make sure that the infection is gone.
If you do not improve or you are having problems with your treatment, talk to your doctor sooner.
When to Call Your Doctor
Call right away if the following symptoms develop: (These may be signs of a possible kidney infection.)
Back or side pain
Also call if you have already been diagnosed with a UTI and the symptoms come back shortly after you finished your antibiotics.
Gupta K, Hooton TM, Naber KG, Wullt B, Colgan R, Miller LG, et al. International clinical practice guidelines for the treatment of acute uncomplicated cystitis and pyelonephritis in women: A 2010 update by the Infectious Diseases Society of America and the European Society for Microbiology and Infectious Diseases. Clin Infect Dis. 2011 Mar;52(5):e103-20.
Susan Storck, MD, FACOG, Chief, Eastside Department of Obstetrics and Gynecology, Group Health Cooperative of Puget Sound, Bellevue, Washington; Clinical Teaching Faculty, Department of Obstetrics and Gynecology, University of Washington School of Medicine. 09/13/11Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.