Gummy bears do eventually go bad as in they get hard and can be hard to chew but they are still safe to eat even when they get hard.
Gummy bears can last a long time as long as the gummy bears have remained sealed.
Unlike other foods the gummy bears do not actually spoil like other foods but the gummy bears do eventually expire which is usually a year or two after they've been packaged.
But you're not gonna get sick when eating old gummy bear candies but they may just be hard and not easy to chew.
The gummy bears might soften up though after you put them in your mouth.
If you have old gummy bears and still want to eat them you certainly can and they won't harm you.
A lot of candy can be eaten well past their expiration dates.