Question Chocolate edibles

I have some chocolate edibles that I originally bought a couple of years ago. I had one when I first got them, but haven't had any since. They are in zip lock style packaging. Can I eat them and still get high? I read edibles can lose potency after 6-8 months depending on how they are stored. These being a couple of years old I'm wondering if they will have any effect on me, or will they just make me sick?