Does anyone know what this is?

I’m not even sure what topic to put this under.

UPDATE:

Thanks ladies for the information. I’m not mad at him or anything. I’ve just never heard of it and the picture on the package threw me off. I feel a lot better now knowing what it is. Thanks again.

ORIGINAL:

I have Googled but I want to know if anyone has heard of these or know anyone that’s taking them. I found this in my husbands bag as I was unpacking from his trip he just went on. I’ve never seen this before. What are they used for? Are they like taking drugs? What are side effects? Any information would help. Someone please give me some information on these. My husband broke his back about 15 years ago. He has steel rods in his back. He is prescribed roxies but only takes one when his pain his bad. But then he’ll only take a quarter or half of one. He’s at work so he doesn’t know I found this package but why wouldn’t he tell me?! I’m more hurt that he’s possibly hiding it from me. But then again, I think if he was trying to hide it, he wouldn’t have left the empty package in his bag knowing I unpack everything.