What is the recommended prophylactic treatment for recurrent UTI after sexual intercourse?

The recommended prophylactic treatment for recurrent urinary tract infections (UTIs) after sexual intercourse involves taking a single-dose of an antibiotic, such as nitrofurantoin, immediately after sexual activity. This approach is particularly useful for individuals who have a history of recurrent UTIs triggered by sexual intercourse. The rationale behind this treatment is that it can help eliminate bacteria introduced during intercourse before they have a chance to proliferate and cause an infection.

Using an antibiotic as a postcoital prophylaxis is effective because it targets the potential pathogenic bacteria promptly. In contrast, continuous antibiotics may lead to increased antibiotic resistance and are not typically recommended as the first-line option for this specific scenario. Cranberry supplements have been studied for their potential benefits in urinary health, but they have shown inconsistent results in preventing UTIs. Increased hydration may help dilute the urine and promote more frequent urination, which can flush out bacteria, but it does not specifically address the postcoital risk of UTIs and therefore is less targeted than the single-dose antibiotic approach.