NexGard (afoxolaner) Chewable Flea & Tick Tablet for Dogs

NexGard for Dogs | #1 Vet-Recommended Chewable, Prescription Required

Quick Facts:

• Best for: Dogs and puppies 8 weeks and older, 4+ lbs
• Main active ingredient: Afoxolaner
• Format: Beef-flavored oral chewable tablet, monthly dosing
• Key support: Kills fleas & multiple tick species, prevents Lyme disease transmission
• Prescription status: ⚠️ Requires a valid veterinary prescription in the US
• Ideal for: Dogs needing systemic (bloodstream) protection rather than a topical

Description: NexGard works differently from Frontline, K9 Advantix, or Seresto in one important respect: rather than sitting on the coat and skin, its active ingredient, afoxolaner, is absorbed into the dog's bloodstream after the beef-flavored chew is swallowed. When a flea or tick bites and feeds, it ingests the afoxolaner circulating in the dog's blood, which disrupts the parasite's nervous system and kills it — a systemic mechanism that also means there's no risk of the product rubbing off on furniture, other pets, or people in the household. It's FDA-approved specifically to prevent Lyme disease transmission by killing black-legged ticks, and is approved for dogs and puppies 8 weeks and older weighing at least 4 lbs. Because NexGard is classified as a prescription veterinary medication in the United States, it cannot legally be purchased without a valid prescription from a licensed veterinarian. If this is listed on your site, the product page should clearly state the prescription requirement rather than presenting it as a simple add-to-cart purchase — most legitimate retailers either verify an on-file vet prescription at checkout or direct customers to obtain one first. Afoxolaner belongs to the isoxazoline drug class, which has been associated with rare neurological side effects (tremors, ataxia, seizures) in a small number of dogs, particularly those with a prior seizure history — a detail worth surfacing for pet owners researching this option.