UTIs in men almost always require antibiotics, and the typical course runs 7 to 14 days. Unlike women, who can sometimes clear a mild bladder infection on their own, the male urinary tract is long enough (16 to 22 centimeters from bladder to exit) that when bacteria do gain a foothold, the infection tends to be more entrenched and harder to resolve without medication. Getting diagnosed and starting treatment quickly is the most effective way to get rid of it.
Why Men Get UTIs in the First Place
UTIs are far less common in younger men than in women, largely because of that longer urethra. But several conditions change the equation. An enlarged prostate is the most frequent culprit. As the prostate grows, it squeezes the urethra and makes it harder to fully empty the bladder. Urine that sits in the bladder gives bacteria a warm, stagnant environment to multiply.
Kidney stones, catheter use, and any structural abnormality that blocks or slows urine flow can have the same effect. Constipation is another overlooked contributor: a full bowel presses against the bladder and urinary tract, promoting bacterial growth. And simply holding your urine too long, whether from habit or prostate issues, raises risk as well.
Recognizing the Symptoms
The hallmark signs are a burning sensation when you urinate, a frequent or urgent need to go (sometimes producing very little), and cloudy or strong-smelling urine. You might also feel pressure or discomfort in your lower abdomen or perineum, the area between the scrotum and rectum.
More serious symptoms signal that the infection may have spread beyond the bladder. Fever, chills, nausea, vomiting, or pain in your side or upper back suggest the kidneys or prostate could be involved. If white blood cell casts show up in a urine sample, that points toward a kidney infection. In acute bacterial prostatitis, most men will have both bacteria and white blood cells in their urine, along with pelvic pain and sometimes difficulty urinating. These scenarios need prompt, aggressive treatment.
How Doctors Diagnose It
A urine culture is the gold standard. You’ll provide a clean-catch midstream sample, and the lab looks for bacterial growth. In men, the threshold for a positive result is lower than in women: as few as 1,000 to 10,000 colony-forming units per milliliter can confirm infection when symptoms are present.
Before culture results come back (which can take a day or two), a quick urine dipstick test helps guide early decisions. A positive result for white blood cells is highly specific, around 94 to 98%, meaning a positive finding reliably indicates infection. A positive nitrite reading, which detects certain bacteria, is also very specific but catches only about 27% of infections, so a negative nitrite test doesn’t rule anything out. Your doctor will typically start antibiotics based on symptoms and dipstick results, then adjust if the culture suggests a different approach.
What Treatment Looks Like
Antibiotics are the core treatment. For men, a course of 7 to 14 days has been the standard, significantly longer than the 3-day courses often prescribed for women with simple bladder infections. Clinical data shows that 7 days works about as well as 14 in most cases: roughly 93% of men had their symptoms resolved by two weeks after finishing a 7-day course, compared to 90% with a 14-day course. Recurrence rates were also similar, around 10 to 13% within 28 days of stopping medication, regardless of course length.
Your doctor will choose the specific antibiotic based on local resistance patterns and your urine culture results. If you have a fever or signs of a kidney or prostate infection, you may need a longer course or, in severe cases, treatment through an IV in a hospital setting, especially if nausea and vomiting prevent you from keeping pills down.
Managing Discomfort While Antibiotics Work
Antibiotics typically start easing symptoms within one to three days, but the infection isn’t fully cleared until you finish the entire course. In the meantime, several things help:
- Increase water intake. Drinking extra water dilutes your urine and helps flush bacteria from the urinary tract. If you have kidney, heart, or liver disease, check with your doctor before significantly increasing fluids.
- Urinate frequently. Don’t hold it. Try to empty your bladder completely each time, even if it means going more often than feels convenient.
- Skip caffeine and carbonated drinks. Both can irritate the bladder lining and make urgency and burning worse.
- Use heat for pain. A warm bath or a heating pad on low over your lower belly or genital area can ease discomfort. Don’t fall asleep with a heating pad in place.
Over-the-counter pain relievers like ibuprofen or acetaminophen can help with general discomfort and fever. A urinary analgesic containing phenazopyridine (available without a prescription) can numb the burning sensation, though it turns your urine bright orange and is meant for short-term use only.
What Happens if You Don’t Treat It
Ignoring a UTI in men carries real risks because the prostate sits right along the urinary tract. An untreated bladder infection can ascend to the kidneys, causing pyelonephritis, or spread into the prostate, causing acute bacterial prostatitis. If prostatitis isn’t treated long enough or the bacteria aren’t fully eliminated, it can become chronic, a condition that’s notoriously difficult to manage and can cause recurring pelvic pain for months.
The complications can escalate from there. An untreated prostate infection can lead to a pus-filled abscess in the prostate, infection of the epididymis (the tube behind the testicle), bacteria entering the bloodstream, or infection spreading to the bones of the pelvis or lower spine. These are uncommon outcomes, but they underscore why men shouldn’t try to wait out UTI symptoms.
Preventing Recurrence
If you’ve had one UTI, addressing the underlying cause is the best prevention. For men with an enlarged prostate, that might mean medication or a procedure to improve urinary flow. If incomplete bladder emptying is a recurring problem and frequently triggers infections, surgical options exist to remove part of the prostate.
General prevention strategies apply to all men. Stay well hydrated so you’re urinating regularly throughout the day. Don’t ignore the urge to urinate or put it off for hours. Address constipation if it’s a recurring issue, since a backed-up bowel puts pressure on the urinary system.
Some evidence supports supplements for prevention. D-mannose, a simple sugar available over the counter, may reduce certain UTI-causing bacteria by preventing them from sticking to the walls of the urinary tract. Cranberry supplements (pills tend to be more concentrated than juice) work through a similar mechanism. Combined with good hydration, these supplements may help clear or prevent a significant portion of infections, though they’re better suited as a preventive strategy than a replacement for antibiotics during an active infection.