Pivmecillinam is primarily used as an antibiotic to treat bacterial infections, particularly those affecting the urinary tract. It is effective against a range of Gram-negative bacteria, including Escherichia coli, which is a common cause of urinary tract infections (UTIs). The medication works by inhibiting the synthesis of bacterial cell walls, leading to the destruction of the bacteria. It is often prescribed for uncomplicated lower UTIs in both acute and recurrent cases. Pivmecillinam is well-tolerated and has a low risk of causing resistance, making it a suitable option for first-line treatment in many regions. Additionally, it is sometimes used in pediatric patients for UTIs, given its safety profile. In some cases, pivmecillinam may also be employed as a prophylactic treatment to prevent recurrent UTIs, especially in patients prone to frequent infections. Its oral administration and targeted efficacy make it a convenient and effective choice for managing bacterial infections in the urinary tract.