I rarely ever use cough drops, and I'm not allergic to iodine, so I don't know any specific non-iodine brands. Just go to the store and look at the ingredients on the label. Iodine will be listed if it's present.

Oh, I don't know. You don't see many people carrying pitchforks around either, but that's not because they're allergic to them. I suppose the real reason is that most people don't have much use for iodine towelettes in the first place.