Nexgard Chewable For Dogs 60.1-121lbs (Red) Nexgard Chewable is an oral ectoparasitic treatment for dogs. This monthly treatment is recommended for use in 8 weeks and older puppies and dogs that weigh between 60.1-121lbs. Nexgard Red kills adult fleas, at the same time, it treats and prevents flea infestations and controls flea allergy dermatitis (FAD). It kills newly acquired adult fleas before they lay eggs, thus preventing flea tapeworm infestations. This chewable formula treats and controls Paralysis ticks, Brown dog ticks, and Bush ticks for one month. Nexgard Chewable for 60.1-121lbs Dogs treats and controls demodectic mange, sarcoptic mange, and ear mite infestations.