Nexgard (Afoxolaner)

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Nexgard Brand
Dosage Quantity & Price
Afoxolaner (Generic alternate to Nexgard) Generic

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Table of contents:

NexGard is indicated for the treatment and prevention of flea and tick infestations in dogs. NexGard contains an active ingredient called Afoxolaner. Afoxolaner belongs to the isoxazoline group of chemical compounds, and it acts as an antagonist at ligand-gated chloride channels in the nervous system of fleas, ticks, and mites.

NexGard is a flea and tick control product for dogs to prevent infections that cause Lyme disease in dogs as a result of killing black-legged ticks. It is a monthly chew that is designed to kill fleas and ticks fast, all month long.

Uses and Dosage

NexGard is a chewable tablet available by prescription and designed to control flea and tick infestations in dogs. If a dose is suspected to have been lost, or if vomiting occurs within two hours of administration, the recommendation is to redose with another full dose. NexGard can be given with or without food, and it should be administered consistently throughout the year to help prevent infestations. Additionally, treat all the pets in your home to reduce the risk of a flea infestation.

The appropriate dosage of NexGard is based on your dog's weight. The recommended dosage of NexGard is a minimum of 1.14 mg/lb. (2.5 mg/kg). Note that it is recommended to speak to a veterinarian before giving NexGard to your dog.

Side effect

Common Side Effects of NexGard (Afoxolaner):

  • Diarrhea
  • Itching
  • Lack of appetite
  • Lethargy
  • Vomiting

Form and strength

NexGard (Afoxolaner) is available in the following forms and strength:

NexGard: Chewable Tablet

  • 11 mg
  • 68 mg
  • 136 mg


  • NexGard may cause adverse reactions in rare cases, such as tremors, ataxia, and seizures, so pet owners should be aware of these potential risks.
  • Follow the recommended dosage guidelines based on the dog's weight and to redose if vomiting occurs within two hours of administration or if a dose is suspected to have been lost.
  • The safe use of NexGard in pregnant, breeding, or lactating dogs has not been evaluated. Use with caution in dogs with a history of seizures or neurologic disorders.
  • If a dose is missed, administer the usual dose of afoxolaner chewable and resume a monthly dosing schedule.
  • Avoid giving NexGard chewable if your pet is pregnant, lactating or has a known history of seizures.

Frequently Asked Questions (FAQ)

How fast does NexGard (afoxolaner) Chewable kill fleas?

In a well-controlled laboratory study, NexGard began to kill fleas four hours after initial administration and demonstrated >99% effectiveness at eight hours.

How often should NexGard be given?

Once a month

What happens if I miss giving a dose of NexGard (afoxolaner) chewable?

If a dose is missed, administer the usual dose of NexGard chewable and resume a monthly dosing schedule.

How quickly will NexGard work?

NexGard works quickly, entering the bloodstream within 30 minutes of ingestion. It starts killing fleas within 4 hours and ticks within 12 hours.


It's important to purchase Nexgard from verified Canadian pharmacy.

Additional information

Generic name:



Chewable Tablet


11mg, 68mg, 136mg

Quantities Available:

3, 6


Online Pharmacies Canada has provided information from third parties intended to increase awareness and does not contain all the information about Nexgard (Afoxolaner). Talk to your doctor or other qualified medical practitioners for medical attention or advice, or if you have any concerns about Nexgard (Afoxolaner).