Does anyone know if Drontal would still be safe to give after 2.5 years of having it in a drawer? They've been tightly locked in a pill vial with the lid on so no air has gotten inside. I got them before our last move for my whole crew but never ended up giving it to them.
I was going to offer them to Rebecca to help her deworm her feral cats to help off set some of the costs. I know she will be getting deworming meds for the 3 cats that she is taking in for surgery on the 22nd but in the meantime she sent me a PM that said that the ferals are throwing up worms and have worms in their feces. It wouldn't be a big deal if the pills weren't effective but I don't want to harm the cats in anyway and that is my main concern. I've emailed the Drontal company but haven't heard back from them. And I know if I call my vet, they will of course recommend that I come on in and buy some 'new' drontal to be on the safe side. So, I thought I'd ask and see if anyone here has ever given some outdated Drontal to their cats without any adverse effects?