The U.S. Food and Drug Administration (FDA) recently alerted pet owners and veterinarians about potential neurologic events associated with drugs in the asoxazoline class, which includes the flea and tick drug, NexGard. We have had a few clients ask us about the safety of this medication.

This is our take on NexGard:

NexGard has been on the market for the last four years (we have carried it for the last two years). It is a convenient product because it is given orally, and it is effective (quickly kills fleas and ticks). More than 200 million doses of NexGard have been sold worldwide.

Both in our experience, and in the experience of veterinarians worldwide, it is very rare to see any side effects in dogs receiving this medication. The most common side effects are vomiting, itching, lethargy, diarrhea and loss of appetite. Each of these side effects is seen in less than 1 out of 10,000 doses given. Neurologic events are seen even less frequently.

NexGard recently was approved by the FDA for prevention of Lyme disease, the only preventative on the market that can make this claim. Nexgard kills the black-legged tick responsible for spreading Lyme disease. Given the prevalence of this disease in our area, the use of NexGard makes sense.

Our goal is to provide you with the safest, most effective preventative medications on the market. We will watch closely for more information on these products; we recommend NexGard as a good option to help keep your dog healthy.