I agonized over using Vectra on my mix breed terrier who is super spoilt and never wants for anything - just to illustrate that he has been on home cooked chicken, carrots, kale, sweetpotato. So he is in good health. He is 15 years old and a year ago he started having heart problems. So flea season is here and we tried to stave off putting pesticide on him until he was going crazy scratching himself. Long story short, on a Monday evening I put a couple of drops of Vectra on his back... Much to our surprise on Tuesday, he stopped scratching... However on Wednesday past midnight, while I was working on the computer, he had a coughing episode (as is common with dogs with heart problems). I wanted to capture this on video to show my vet as it seemed like a strange cough we've never seen before. While turning on my phone, I noticed he fell over on his bed - like crumpled. I rushed over and noticed his limp body and picked him off the bed. I noticed he had wet his bed which was tinged reddish.. My husband was bawling and I kept us calm not wanting to freak out our dog who seem to have stopped breathing. He started breathing shortly but just laid there...Long story short, he stabilized and we put him to bed. Next morning we went to his Cardiologist first thing. We asked him if it could be the flea medicine which he said not likely.... But I wonder...if it could be Vectra. In any case, I will not use it again. Fred is all back to himself, eating well, peeing and pooing well. We watch him like a hawk all the time.
Now I am going back to Frontline - he does get antsy for a few minutes but have never had episodes like this.