NexGard Chewables for Dogs 60.1-121 lbs (6 Chews) | On Sale | EP Rx
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NexGard Chewables for Dogs - afoxolaner - 60.1-121 lbs (6 chews) - [Flea & Ticks]

Item# IWM050025
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4 - 10 lbs (Orange)10.1 - 24 lbs (Blue)24.1 - 60 lbs (Purple)60.1 - 121 lbs (Red)
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Notices

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Description

NexGard Chewables for Dogs

NexGard Chewables is a fast-acting, monthly flea and tick treatment for dogs. This beef-flavored chewable tablet kills fleas within 4 hours and ticks within 8 hours, providing rapid and lasting protection. NexGard is effective against fleas and multiple tick species including the American dog tick, black-legged tick, and Lone Star tick.

Suitable for dogs 8 weeks and older weighing at least 4 pounds, NexGard is easy to administer and can be given with or without food. As a prescription-only medication, it should always be used under veterinary supervision.



Key Features:

  • Monthly Protection: One chewable provides 30 days of protection against fleas and ticks.
  • Fast-Acting: Begins killing fleas within 4 hours and ticks within 8 hours.
  • Easy to Give: Flavored chewable that dogs readily accept.
  • Safe and Approved: FDA-approved for dogs 8 weeks and older, weighing 4+ pounds.
  • Veterinary Supervision: Requires a prescription from your veterinarian.


Indications:

NexGard is indicated for:

  • Flea Infestations: Kills adult fleas (Ctenocephalides felis) before they lay eggs, disrupting the flea life cycle.
  • Black-Legged Ticks (Deer Ticks): Controls Ixodes scapularis, a vector of Lyme disease and anaplasmosis.
  • American Dog Ticks: Effective against Dermacentor variabilis, which can spread Rocky Mountain spotted fever.
  • Lone Star Ticks: Targets Amblyomma americanum, known for transmitting ehrlichiosis and other tick-borne illnesses.


Note: NexGard is for dogs only. Do not use in cats or other pets.



How NexGard Works:

The active ingredient, afoxolaner, belongs to the isoxazoline class of compounds and is both an insecticide and acaricide.

  1. Absorption: After ingestion, afoxolaner is absorbed into your dog’s bloodstream.
  2. Neurological Disruption: Afoxolaner blocks GABA and glutamate-gated chloride channels in parasites, disrupting nerve transmission.
  3. Paralysis and Death: This disruption causes hyperexcitation, paralysis, and death of fleas and ticks.
  4. Quick Onset: Fleas are killed within 4 hours; ticks within 8 hours. Effects last a full month.
  5. Consistent Dosing: Administer monthly to maintain protection and prevent reinfestation.


While NexGard is generally well tolerated, some dogs may experience mild side effects. Always consult your veterinarian before starting or continuing treatment.



Specifications:

  • Active Ingredient: Afoxolaner
  • Form: Flavored chewable tablet
  • Strength: Varies by dog weight
  • Route: Oral administration
  • Flea Killing Speed: Begins within 4 hours
  • Tick Killing Speed: Begins within 8 hours
  • Protection Duration: 30 days
  • Recommended For: Dogs 8 weeks+ and ≥4 lbs
  • FDA Approved: Yes, for canine use
  • Flavor: Beef-flavored for easy dosing
  • Packaging: Available in multiple strengths for different weight ranges

Ingredients

NexGard Chewables for Small Dogs 4-10 lbs
Active Ingredient (per tablet) Amount
Afoxolaner 11.3 mg
NexGard Chewables - For Medium Dogs 10.1-24 lbs
Active Ingredient (per tablet) Amount
Afoxolaner 28.3 mg
NexGard Chewables - For Large Dogs 24.1-60 lbs
Active Ingredient (per tablet) Amount
Afoxolaner 68 mg
NexGard Chewables - For Extra Large Dogs 60-121 lbs
Active Ingredient (per tablet) Amount
Afoxolaner 136 mg

Directions

View NexGard Drug Facts Sheet (PDF)

NexGard is a convenient, once-a-month oral chewable that offers effective protection against fleas and ticks in dogs. It is administered at a minimum dosage of 1.14 mg/lb (2.5 mg/kg).

NexGard Dosage by Dog Weight:

Dosing Schedule:
Body Weight Afoxolaner Per Chewable (mg) Chewables Administered
4.0 to 10.0 lbs 11.3 1 Orange
10.1 to 24.0 lbs 28.3 1 Blue
24.1 to 60.0 lbs 68 1 Purple
60.1 to 121.0 lbs 136 1 Red
Over 121.0 lbs Administer the appropriate combination of chewables

Administration Instructions:

NexGard can be given with or without food. Ensure the entire chewable is consumed. Observe your dog briefly after administration. If vomiting occurs within two hours or if any dose is lost, administer another full dose. If a dose is missed, give NexGard as soon as remembered and resume the regular monthly schedule.

Flea Treatment & Prevention:

NexGard may be started at any time of year. In areas with year-round flea activity, continuous monthly treatment is recommended. All household pets should be treated with an approved flea control product to prevent reinfestation.

Tick Treatment & Control:

NexGard may be administered at any time of the year. Refer to the Effectiveness section for details on tick species.

Contraindications:

There are no known contraindications for NexGard use.

Warnings:

Not for human use. Keep out of reach of children. In case of accidental ingestion, contact a physician immediately.

Precautions:

The safety of NexGard has not been evaluated in breeding, pregnant, or lactating dogs. Use with caution in dogs with a history of seizures (see Adverse Reactions).

Adverse Reactions:

In a U.S. field study, no serious adverse reactions were observed. The most common reaction was vomiting, which was self-limiting and decreased over time. Other reactions reported in more than 1% of dogs included anorexia and lethargy.

Reported Adverse Reactions:

Dogs With Adverse Reactions.
Treatment Group
Afoxolaner Oral active control
N1 % (n=415 N2 % (n=200)
Anorexia 5 1.2 9 4.5
Vomiting (with and without blood 17 4.1 25 12.5
Dry/Flaky Skin 13 3.1 2 1.0
Diarrhea (with and without blood) 13 3.1 7 3.5
Lethargy 7 1.7 4 2.0

1 Number of dogs in the treatment group with reported reaction.

2 Number of dogs in the control group with reported reaction.

Seizures were reported in a few dogs with a prior history of seizures. To report adverse events, contact Merial at 1-888-637-4251 or visit merial.com/nexgard. Alternatively, report to the FDA at fda.gov/AnimalVeterinary/SafetyHealth or call 1-888-FDA-VETS.

Mode of Action:

Afoxolaner, part of the isoxazoline class, targets ligand-gated chloride channels (GABA receptors) in insects and acarines, causing hyperexcitation and death. It exhibits selective toxicity due to its lower binding affinity in mammalian GABA receptors.

Effectiveness:

Laboratory studies show NexGard begins killing fleas within 4 hours and achieves over 99% effectiveness within 8 hours. It remains 100% effective against adult fleas for up to 35 days and maintains ≥93% effectiveness through Day 35. It is also effective against Dermacentor variabilis, Ixodes scapularis, Rhipicephalus sanguineus, and Amblyomma americanum ticks.

A U.S. field study showed >98% effectiveness against fleas on Days 30, 60, and 90. NexGard kills fleas before they can lay eggs, preventing reinfestation.

Animal Safety:

Safety studies in puppies showed no clinically significant effects at doses up to 5 times the maximum recommended. NexGard was safely used with commonly prescribed veterinary medications.

Storage:

Store at or below 30°C (86°F) with excursions permitted up to 40°C (104°F).

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