Which of the following is an example of nonprescription medication?

Ibuprofen is classified as a nonprescription medication, also known as an over-the-counter (OTC) medication. It is commonly used for pain relief, inflammation reduction, and fever control. People can purchase ibuprofen without needing a prescription from a healthcare provider, making it accessible for self-treatment of common ailments such as headaches, muscle aches, and menstrual cramps.

The other options, such as antibiotics, insulin, and antidepressants, require prescriptions due to their potential for misuse, side effects, and the need for medical supervision when taken. Antibiotics are specifically prescribed to treat bacterial infections. Insulin is necessary for individuals with diabetes and must be carefully managed by healthcare professionals. Antidepressants require a prescription because they are complex medications influenced by mental health diagnosis and individual patient factors.