Frequently Asked Questions

NexGard contains afoxolaner, an isoxazoline compound that works by over-stimulating the nervous system of fleas and ticks after they bite your dog, causing paralysis and death. Because it's systemic (absorbed into the bloodstream), it won't wash off with bathing or swimming.

NexGard chews should be given once a month, every 30 days. For best results, give it on the same day each month and continue year-round, especially in areas where fleas are common.

Yes! NexGard is FDA-approved for dogs and puppies 8 weeks of age or older, weighing 4 pounds or more. NexGard PLUS is also safe for puppies at 8 weeks, weighing 4 lbs or more.

NexGard protects against fleas and 4 types of ticks. NexGard PLUS does everything NexGard does, PLUS prevents heartworm disease and treats roundworms and hookworms — all in one monthly chew.

Yes, NexGard and NexGard PLUS require a prescription from a licensed veterinarian. NexGard PLUS also requires a negative heartworm test before starting. Please consult your vet before purchasing.

The most frequently reported side effects include vomiting, itching, lethargy, diarrhea, and lack of appetite. Use with caution in dogs with a history of seizures. Consult your veterinarian if you observe any adverse reactions.

Yes! Use promo code NEXGARD15 at checkout to receive 15% off your order. The discount applies to all products sitewide.