Fox: These flea and tick medications for pets are causing seizures, other neurological issues, FDA warns
On Thursday the FDA warned that some flea and tick medications could potentially cause “neurological adverse events” in cats and dogs. The warning applies to drugs in the isoxazoline class.
If you are currently treating your fur baby with Bravecto, Nexgard or Simparica you need to be careful. According to the FDA, some animals treated with these medications
“have experienced adverse events such as muscle tremors, ataxia, and seizure.”1 There is also another product in that class of drugs called, Credelio (it recently received FDA approval).
“While the FDA said it ‘carefully reviewed studies and other data on Bravecto, Credelio, Nexgard and Simparica prior to approval,’ the agency has requested manufacturers of these products to change product labeling to better ‘provide veterinarians and pet owners with the information they need to make treatment decisions for each pet on an individual basis.’”2
To report adverse effects or for more information about the warning, contact:
- Merck Animal Health (Bravecto): 800-224-5318
- Elanco Animal Health (Credelio): 888-545-5973
- Merial (Nexgard): 888-637-4251
- Zoetis (Simparica): 888-963-8471
Personal story: Having studied these products I opted for the flea/tick collar you stretch to activate. Thinking I knew better than the package insert, I bought a new one and switched it out after a month or two (forget the length now) thinking it lost its power. After doing this my dog started suffering from a skin condition that eventually led to his downfall. He was 11 so his age didn’t help but it definitely affected his entire immune system. It was discovered in the process that he also had heart issues which I’m sure didn’t help however, I can’t help but think that my zeal ushered him out. So take it from me, read the directions and don’t be overzealous in applying any product to your pet. Have a good conversation with your vet and get straight answers.
BTW: Bucky got Lyme first in this family which was picked up on a routine yearly blood test. He didn’t have any symptoms yet our wise vet prophylactically treated him with extended antibiotics. The rest of us didn’t fare as well, I’m afraid.