Can NexGard cause seizures?

Answered by Robert Flynn

NexGard, along with other flea and tick preventatives like Bravecto, Simparica, and Credelio, has been associated with the potential risk of causing neurological side effects, including seizures, in pets.

The active ingredient in NexGard is afoxolaner, which belongs to a class of drugs called isoxazolines. While these medications are generally considered safe and effective in controlling fleas and ticks, it is important for pet owners to be aware of the potential risks associated with their use.

Seizures are a known possible side effect of isoxazoline medications, including NexGard. The mechanism behind this is not fully understood, but it is thought to be related to the effects of the drug on the nervous system. Some pets may be more susceptible to these neurological side effects than others.

It is important to note that the occurrence of seizures or other neurological issues with NexGard or similar medications is relatively rare. However, as responsible pet owners, it is crucial to be informed about the potential risks and to monitor your pet for any abnormal symptoms while using these products.

If your pet experiences any concerning symptoms like stumbling, seizures, twitching, or other neurological abnormalities after administering NexGard or any other flea and tick preventative, it is essential to seek veterinary attention immediately. Your veterinarian can evaluate your pet and determine the appropriate course of action, which may include discontinuing the medication and exploring alternative options for flea and tick prevention.

While the FDA has reported these potential risks, it is important to remember that the benefits of using flea and tick preventatives in preventing diseases and discomfort caused by fleas and ticks generally outweigh the potential risks. However, each pet is unique, and it is crucial to discuss the best flea and tick preventative options with your veterinarian based on your pet’s individual needs, health status, and any potential risk factors.

Although NexGard and similar medications have been associated with the potential risk of causing seizures and other neurological issues in pets, it is essential to weigh the benefits and risks with the guidance of your veterinarian. Monitoring your pet for any abnormal symptoms and seeking veterinary attention if any concerns arise is crucial for the well-being of your furry friend.