Of the following drug classes, which one would be used to treat headache?

Analgesics are medications specifically designed to relieve pain, and they play a crucial role in treating headaches. This class of drugs includes over-the-counter options like acetaminophen and ibuprofen, as well as prescription medications for more severe pain. By blocking pain signals or altering the perception of pain, analgesics can effectively reduce the discomfort associated with headaches.

The other drug classes do not primarily target pain relief in the context of headaches. Anti-epileptics are mainly used to manage seizures, while antibiotics are used to treat bacterial infections. Anti-tussives are cough suppressants and do not address pain. Therefore, analgesics are the appropriate choice for headache treatment due to their direct role in alleviating pain symptoms.