Hi I’m so sorry for your loss, what did the vet say happened?? & did you contact the company so an autopsy could be done……
My cat got real ill from Revolution Spot-On, I rung Revolution straight away & they told me to take my cat to a vet ASAP & they paid the vet bill…..
When I rescued my boy the rescue lady gave me, 1 lead, his paper work, 1 worm tablet & 1 Comfortis tablet for fleas, but I never gave the Comfortis tablet to Patch after she told me she has had a few of the little rescue dogs nilly die after taking Comfortis, she said you need to know the proper weight, you must 1/2 the Comfortis tablet & give with a big proper meal after you give the 1/2 Comfortis tablet you must watch the cat or dog for 1 hour to see if they vomit & vomit back up the tablet, the company gives you another tablet if the dog or cat vomits up pill then after 1 hour & everything is OK, you give the other 1/2 Comfortis tablet 10-12 hours later with their dinner…but after she told me all that I thought gee I’m going to just use the normal Spot-On treatment, so I used Frontline spot-on then about 3 months later it didn’t really seem to be working, I had just applied 1 Frontline Spot-On & Patch still had fleas, so I had to wait 3 weeks the vet said I have to wait, then I bought the Advantage Spot-On, later thru the night 3am Patch vomited blood, his left side of face & ear were swollen by the time I realised what was happening & Patch was ill from the Advantage Spot On & rung the vet she said Patch has just past the 24hrs, so he’s over the worse of it now, then the vet explained that Frontline Spot-On only penetrates 2-3 layers of their skin, where the Advantage Spot On penetrates thru to their blood, so that’s why Patch was so ill……. now I just use the Frontline Spot-On only when needed in Spring & Summer & the Frontline spray on his legs & around lower tail & lower back, Frontline seems to work the best & Patch has no side effects, he’s very sensitive to medications etc..
