Male UTIs are treated with antibiotics, typically for 7 days, which is longer than the 3-day course most women receive. Men are at higher risk of complications from urinary tract infections due to anatomical differences, so treatment tends to be more aggressive. A urine culture is usually required before or alongside starting antibiotics to confirm the infection and identify which bacteria are causing it.
Why Male UTIs Require Longer Treatment
For an uncomplicated lower UTI in men, guidelines recommend a 7-day antibiotic course. Women with the same type of infection typically need only 3 days. The reason comes down to anatomy: the male urinary tract is longer, and the prostate sits right along it. Bacteria can settle into the prostate tissue, which is harder for antibiotics to reach. A shorter course risks leaving bacteria behind, which can lead to a chronic or recurring infection.
If the infection is classified as complicated, meaning it involves the kidneys or occurs alongside another condition like an enlarged prostate, treatment may extend to 10 to 14 days. Prostate infections specifically can require 14 days or more of antibiotics to fully clear.
What to Expect at the Doctor’s Visit
Your doctor will ask for a urine sample. The lab looks for bacteria at a threshold of at least 100,000 colony-forming units per milliliter to confirm an active infection. This culture also reveals which specific bacteria are involved and which antibiotics will work against them, which matters because antibiotic resistance is increasingly common.
In many cases, your doctor will start you on an antibiotic right away based on your symptoms and then adjust the prescription if the culture results (which take 1 to 3 days) show a different antibiotic would work better. If you’ve had multiple UTIs, your doctor may also order imaging or refer you to a urologist to check for structural issues like an enlarged prostate or urinary obstruction that could be trapping bacteria.
Common Antibiotics Used
The most frequently prescribed antibiotics for male UTIs include nitrofurantoin for uncomplicated infections (taken twice daily for 7 days), sulfamethoxazole-trimethoprim for complicated infections (twice daily for 7 days), and ciprofloxacin when there’s concern about harder-to-treat bacteria (twice daily for 5 to 7 days). Ciprofloxacin belongs to a class of antibiotics called fluoroquinolones, which penetrate prostate tissue well but carry a higher risk of side effects like tendon problems and nerve damage. For that reason, it’s generally reserved for cases where other options won’t work.
Finish the entire course even if your symptoms improve after a few days. Stopping early is one of the main reasons infections come back or become resistant to treatment.
Managing Pain While Antibiotics Work
Antibiotics typically start relieving symptoms within 24 to 48 hours, but the burning and urgency can be miserable in the meantime. An over-the-counter urinary pain reliever containing phenazopyridine can help. The standard dose is 200 mg taken three times a day. It numbs the lining of the urinary tract and reduces that painful burning sensation within about 20 minutes.
One thing to know: phenazopyridine turns your urine bright orange or red, which is harmless but can stain clothing and contact lenses. It’s meant for short-term use only, typically no more than 2 days alongside your antibiotic. Drinking plenty of water also helps by diluting your urine, which reduces irritation, and by physically flushing bacteria out of your system.
What Happens if a UTI Goes Untreated
An untreated UTI in men can spread in several directions, none of them good. The most common complication is acute bacterial prostatitis, where the infection moves into the prostate gland. This causes severe pelvic pain, fever, chills, and difficulty urinating. If the initial treatment is too short or fails to kill all the bacteria, it can become chronic bacterial prostatitis, a frustrating condition that flares up repeatedly over months or years.
The infection can also travel upward to the kidneys (pyelonephritis), causing high fever, back pain, nausea, and vomiting. In rare but serious cases, bacteria enter the bloodstream, a condition called bacteremia, which requires emergency treatment. Other potential complications include epididymitis (infection of the tube behind the testicle, causing swelling and pain) and, very rarely, an abscess forming in the prostate.
Preventing Recurrent Infections
If you’ve had more than one UTI, prevention becomes just as important as treatment. The basics are straightforward: drink enough water throughout the day to keep your urine pale, urinate regularly rather than holding it, and always urinate after sexual activity. These simple habits physically flush bacteria before they can establish an infection.
For men with frequent recurrences, a doctor may prescribe a low-dose daily antibiotic taken for three months to a year. If infections tend to follow sexual activity, a single antibiotic dose taken afterward can be effective. Cranberry extract supplements have some evidence behind them for preventing the most common UTI-causing bacteria from attaching to the bladder wall, though they won’t treat an active infection. Another option is a prescription antiseptic medication that works by making urine more acidic, creating an environment hostile to bacteria.
Recurrent UTIs in men often signal an underlying issue. An enlarged prostate, kidney stones, or a narrowing of the urethra can all create conditions where bacteria thrive. Addressing the root cause, when one exists, is the most effective long-term prevention strategy.