Urinary tract infections (UTIs) are very common and highly treatable. Doctors typically prescribe a short course of oral antibiotics to clear the infection. The most commonly prescribed generic tablets include nitrofurantoin, sulfamethoxazole-trimethoprim, cephalexin, and fosfomycin. Your doctor will select the best option for you based on your medical history. It is very important to finish the entire prescribed course of medicine, even if your symptoms improve quickly, to ensure the infection is completely gone. Also, remember to drink plenty of water to help flush out the system.