Which medication is used for treating a urinary tract infection?

Ciprofloxacin is an antibiotic that belongs to the fluoroquinolone class of medications and is commonly prescribed for the treatment of urinary tract infections (UTIs). Its effectiveness is due to its ability to inhibit bacterial DNA synthesis, ultimately leading to the death of the bacteria causing the infection. This makes it a suitable choice for addressing the bacterial pathogens often responsible for UTIs.

The other medications listed do not serve the purpose of treating urinary tract infections. Levothyroxine is a synthetic form of the thyroid hormone used to treat hypothyroidism, while simvastatin is a medication that lowers cholesterol levels, and gabapentin is primarily used for nerve pain and seizure disorders. These medications have different therapeutic uses that do not relate to treating infections, particularly UTIs.