Nexgard Chewable for Dogs is a vet-recommended, palatable beef-flavored chew that protects puppies and dogs from a range of external parasites. This monthly formula is recommended for use in 8 weeks and older puppies and dogs that weigh at least 4 lbs.
When administered as indicated, Nexgard for dogs kills adult fleas, treats and prevents flea infestations. It also treats and controls five types of tick infestations including black-legged tick, American dog tick, lone star tick, brown dog tick and longhorned tick. Due to its ability to kill black-legged ticks, Nexgard Chewable is recommended for the prevention of Lyme disease infections in dogs.
Nexgard flea and tick treatment contains the active ingredient afoxolaner which belongs to the isoxazoline family of drugs. This fact-acting formula works quickly and begins killing fleas within four hours. It works by blocking pre- and post-synaptic transfer of chloride ions across cell membranes causing prolonged hyperexcitation in parasites' central nervous system and death of the insects in the end.
Note: Nexgard should be used with caution, after consulting with a vet in dogs with a history of seizure or other neurologic disorders.