Tilly is due to be wormed next week, she has always had the drontal one but last time i was told to give her 1 1/2 tablets and she was sick a few hours later had always been ok before that but had only needed to have the one tablet was going to mention this at the vets when i go next week was wondering should i give her a different make. i saw on the P@H website they sell the panucar syringe for just under a fiver, i remember giving my horse this make does anybody else use this one?