Bufferin is a brand name for an over-the-counter pain reliever that contains aspirin. There are several synonyms for Bufferin, including acetylsalicylic acid, ASA, salicylate, and aspirin. These terms all refer to the same active ingredient found in Bufferin, which is known for its analgesic and anti-inflammatory properties. Other medications with similar properties to Bufferin include acetaminophen, ibuprofen, and naproxen, which are available under various brand names. As with any medication, it's essential to follow dosing instructions carefully and consult a medical professional if you have any questions or concerns about using Bufferin or its equivalents.