Non-steroidal anti-inflammatory drugs, or NSAIDs, are a class of medications commonly used to relieve pain, reduce inflammation, and lower fever. They work by inhibiting enzymes in the body that contribute to inflammation and pain signaling. Common examples of NSAIDs include ibuprofen, naproxen, and aspirin. NSAIDs are often used to treat conditions such as arthritis, muscle pain, and headaches. While they are effective for many people, they can have side effects, including stomach irritation and increased risk of bleeding. It's important to use NSAIDs as directed and consult a healthcare professional if you have concerns.