Um, both. There's an antihistimine pill, and an antibacterial liquid. I've resorted to crushing up the pill and putting it in the liquid, because she won't eat the pill (even when embedded in a treat... she's not really eating solid anything at this point, even food!). It's incredibly difficult to get her to take the liquid, and she foams/gags/etc like crazy afterwards. If you know hints, pray tell.