To determine if Tylenol has expired, one can start by checking the packaging for an expiration date. This date is typically printed on the box or the bottle, and it indicates the period during which the product is guaranteed to maintain its full potency and safety. If the expiration date has passed, it is advisable not to use the product. Additionally, one should inspect the physical characteristics of the Tylenol, such as color, shape, or any unusual odor. If the tablets appear discolored, crumbled, or have changed from their original condition, it is wise to avoid using them. For the most accurate guidance and information on the storage and shelf life of Tylenol products, reviewing the current details on the official Tylenol website may be helpful. Maintaining proper storage practices, such as keeping the medication in a cool, dry place, will also help ensure its effectiveness for as long as possible.