The phrase “use by” typically refers to a deadline or an expiration date for a product, indicating that it should be used or consumed before that specified date for quality, safety, or effectiveness reasons. It is commonly found on food packaging, pharmaceuticals, and other consumables.
For example, if a food product has a “use by” date of October 10, 2023, it means that the product is recommended to be consumed by that date to ensure it is safe and at its best quality. After this date, the product may not be safe to eat, and its quality may deteriorate.
In summary, “use by” serves as an important guideline for consumers to ensure they are using products while they are still safe and effective.