Is it safe to use unopened tampons from years ago?

It is not recommended to use unopened tampons that are more than three years old. Tampons are made of cotton and rayon, which are natural materials that can deteriorate over time. This deterioration can lead to the growth of bacteria and other microorganisms, which can cause infections and other health problems. Additionally, the adhesive strip that holds the tampon in place can become less sticky over time, making it more likely to fall out and cause injury. For these reasons, it is best to discard any unopened tampons that are more than three years old.