Pain relievers, also known as analgesics, are medications designed to reduce or eliminate pain. They work by blocking pain signals in the brain or by reducing inflammation in the body. Common types of pain relievers include acetaminophen, nonsteroidal anti-inflammatory drugs (NSAIDs) like ibuprofen, and opioids for more severe pain. These medications can be used for various conditions, such as headaches, arthritis, or post-surgical pain. While many pain relievers are available over-the-counter, some require a prescription. It's important to use them as directed to avoid potential side effects or complications.