I recently ran out of vitamic c tablets, and told my dad to get them after work. I showed him the picture and where he could get them from. Apparently "There was too much traffic in that area," so my dad got these two vitamin c treats from PetSmart. One of them were yogurt drops, so I told him to return them. The other ones, though, I haven't ever seen before. The ingredients are dried cranberries, dried kiwi, dried rose hips, dried orange slices, suger (doesn't say how much), and sulfur dioxide. I have no idea whether sulfur dioxide is okay for guinea pigs or not.