Was just wondering if anyone who has wormed there dog with Panacur has had any side effects. Since I started worming Connor with it last week (he has had to have one sachet for 7 days today was his last day), he has been really hyper and at night time he is dreadful. He does not settle is running up and down the stairs for most of the night, i feel so tired as i too am not sleeping as all i can hear is him up and down the stairs he just does not seem to be able to settle. He has allways been a figet but the last 7 days since he started on the Panacur he is far worse. Was tempted not to give him the last one today as i need some sleep. But i have given it to him. Nothing else has changed in his routine and he has at least 2 hours walk a day an hour in the morning and an hour at night and i do brain work with him at home. So i can only put it down to the Panacur would be interested if anyone else has had this problem.