My Dog Is On Nexgard And Still Has Fleas

Nexgard is a flea and ticks preventative that works to kill ticks and fleas, preventing them from attaching to your dog. It is administered orally, and the active ingredient is afoxolaner (spinosad). The drug has a wide margin of safety for dogs, cats, kittens, and puppies over four weeks old. However, just because it’s safe for your dog doesn’t mean it’s not possible for your dog to develop an allergy or sensitivity to the drug.

It is important that you consult with your veterinarian before starting any new medication so they can help you determine if there are any potential interactions with other medications or products that your dog might be taking regularly (such as heartworm preventive).

If your dog starts having skin reactions after taking Nexgard it may be an indication that he has developed an allergy or sensitivity to this medication. If this happens contact your vet immediately so they can help you manage the symptoms until they subside on their own or until another course of treatment can be determined.

How Long Do Fleas Live After Nexgard?

Fleas are a common problem for dogs and cats. When you choose to use Nexgard, you’re choosing to protect your pet from fleas and ticks. However, it’s important to know how long after using this medication that pet fleas will continue to live in your dog or cat’s body.

Nexgard is made of two active ingredients: afoxolaner and pork liver flavor. Afoxolaner is a selective insecticide that kills adult fleas on contact and prevents the development of larvae for up to 30 days after administering Nexgard. Pork liver flavor is a palatable liver flavoring that helps encourage your dog or cat to take the pill easily.

It takes about 12 hours for Nexgard to reach its peak effectiveness and start killing fleas. It can take up to 24 hours for all flea eggs and larvae in your pet’s body to die off completely after taking this medication. While Nexgard does not kill all flea eggs or larvae immediately, it does prevent them from developing into adult fleas for up to 30 days after administration (or until they are removed).

Can Fleas Survive Nexgard?

Fleas are the bane of our existence. They’re tiny, they’re annoying, and they love to bite. But here’s some good news: if you see a flea on your dog or cat, it’s probably not going to live very long.

Fleas are notoriously hardy little bugs, they can withstand extreme temperatures and dry conditions, as well as survive in the wild without any food for weeks at a time. However, there are some things that will kill fleas before they can get started. One of these things is Nexgard.

Nexgard is a prescription medication used to treat flea infestations in dogs and cats (and some other animals). It contains an active ingredient called afoxolaner, which works by attacking the nervous system of fleas so that they’re unable to move or feed themselves. The result is death within 12 hours after being bitten by an affected animal.

If your pet has been treated with Nexgard, it’s unlikely that there will be any more fleas in their fur for at least three months after treatment. If you’ve got a problem with fleas but haven’t tried this product yet? You might want to give it a shot.

Does Nexgard Kill Fleas or Make Them Jump Off?

Nexgard is a safe and effective way to treat your dog for fleas. It treats fleas, ticks, and mosquito larvae for up to 30 days. The medication works by blocking the transmission of a neurotransmitter called GABA in the nervous system of the insect. This causes paralysis and death of fleas within 12 hours of treatment. However, it’s important to note that Nexgard does not kill adult fleas, it only prevents them from reproducing.

In addition to killing fleas, Nexgard also prevents ticks from attaching themselves to your dog’s skin, so they won’t be able to transmit Lyme disease or other harmful pathogens. If you live in an area where ticks are prevalent, it might be a good idea to combine Nexgard with another tick-prevention product like Bravecto or Advantix II.

Nexgard can also treat mosquito larvae before they become adults and start biting humans or animals, this is especially helpful if you live in an area where mosquitoes are abundant during the summer months.

How Long Does Nexgard Take To Kill Fleas

Nexgard, the flea and tick preventative that doesn’t need to be given monthly, is the first of its kind. It’s a pill that you can give your dog once a month, and it will kill fleas and ticks for up to 30 days after ingestion.

The time it takes for Nexgard to kill fleas depends on how long the flea is feeding on your dog and ingesting the medicine. The initial dose takes three hours to kick in, so if your dog gets bitten right before feeding him Nexgard, then he’ll still have some fleas for a little while.

List of Flea Killers

The flea is a small insect that can be found in most homes and on many pets. They are a common cause of skin irritation, so it’s important to kill these pests before they begin to bite your pet. While there are many types of flea killers, we’ve compiled a list of the best ones to help you choose the right product for your home.


Vet’s Best Flea and Tick Home Spray | Flea Treatment for Dogs and Home | Plant-Based Formula | 32 Ounces

Price: $9.97

Features :

  • GENTLE PROTECTION: Vet’s Best Flea & Tick Home Spray uses certified natural ingredients to kill fleas, flea eggs, and ticks on contact.
  • PROVEN EFFECTIVE: Whether facing an active infestation or applying for routine prevention, our spray is scientifically proven effective against pests but gentle enough to use around the whole family.
  • CERTIFIED NATURAL OILS: Each steam-distilled essential oil is selected for its potent pest-fighting properties and is 100% Certified Natural.
  • TOTAL HOME DEFENSE: Applies easily on surfaces, indoors and out, including dog bedding, crates, furniture, blankets, upholstery, carpets, outdoor surfaces, and more. Also gentle enough to be applied directly on dogs and puppies 12 weeks or older.
  • MADE IN THE USA: Our products are proudly manufactured in the USA with quality domestic and internationally sourced ingredients.

Additional Info :

Item Dimensions 
Height0.81 Inches
Width3.38 Inches
Length3.38 Inches
Weight2.42 Pounds

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PetLab Co. Probiotics for Dogs - Support Gut Health, Itchy Skin, Seasonal Allergies, and Yeast with Each Tasty Chew - Dog Probiotics - Safe for Small, Medium and Large Dogs - Packaging May Vary

PetLab Co. Probiotics for Dogs – Support Gut Health, Itchy Skin, Seasonal Allergies, and Yeast with Each Tasty Chew – Dog Probiotics – Safe for Small, Medium and Large Dogs – Packaging May Vary

Price: $35.95

Features :

  • ONE CHEW, MANY BENEFITS – With this single-dog probiotic you can deliver digestive support, promote healthy yeast production, and encourage a normal immune response. Unlock a new world of happiness and comfort for your dog
  • WORLD-CLASS INGREDIENTS – Our pet probiotic supplement contains a base of Inulin (prebiotic for dogs), Honey, and Pumpkin. Plus 8 strains of beneficial bacteria that aid digestion, optimize skin health, and support coat comfort
  • EASY-TO-USE – Young puppy or a senior dog? Supporting their gut health shouldn’t be difficult. Our canine Chews are easy to use and easily absorbed, and thanks to their mouth-watering pork flavor, they are easy to give to even the fussiest of pups
  • PREMIUM AMERICAN PRODUCT – No expense is spared during our manufacturing process. Our dog health supplies are exclusively manufactured in the USA in FDA-registered facilities utilizing safe, effective ingredients
  • INVEST IN YOUR DOG’S HEALTH – Want to help your dog’s occasional itchy skin, paw licking, head shaking, or loose stools? Subscribe and save today to join over 1 million dogs and pet parents thriving as part of the PetLab Co. family

Additional Info :

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Nutramax Proviable Digestive Health Supplement Multi-Strain Probiotics and Prebiotics for Cats and Small Dogs - With 7 Strains of Bacteria, 80 Capsules

Nutramax Proviable Digestive Health Supplement Multi-Strain Probiotics and Prebiotics for Cats and Small Dogs – With 7 Strains of Bacteria, 80 Capsules

Price: $39.99

Features :

  • CONTAINS 7 STRAINS OF BENEFICIAL BACTERIA: A probiotic with multiple strains, each having different properties, has a potentially higher likelihood of colonization versus a single-strain product
  • SUPPORTS GASTROINTESTINAL HEALTH IN DOGS AND CATS: Imbalances such as stress from travel or kenneling, or a change in diet can affect your pet’s gastrointestinal health; Signs of an imbalance include loose stool, decreased appetite, or vomiting
  • CONTAINS PREBIOTICS TO SUPPORT GROWTH: Prebiotics are complex carbohydrates that can be used as a food source for our probiotic strains; This helps to support the growth of the probiotics within the intestinal tract and helps them to compete against the harmful bacteria for colonization of the intestines
  • EASY TO GIVE: Contents of capsules can be easily sprinkled over food

Additional Info :

Item Dimensions 
Height4.25 Inches
Width2.5 Inches
Length2.5 Inches
Weight0.1 Pounds

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FRONTLINE Plus Flea and Tick Treatment for Dogs (Extra Large Dog, 89-132 Pounds, 3 Doses)

FRONTLINE Plus Flea and Tick Treatment for Dogs (Extra Large Dog, 89-132 Pounds, 3 Doses)

Price: $33.14

Features :

  • The name in flea & tick protection trusted by pet owners for over 20 years, this waterproof, fast-acting flea and tick treatment kills fleas, flea eggs, lice, and ticks, including those that may transmit Lyme disease.
  • Designed for use only with dogs and puppies, this long-lasting treatment is made for dogs eight weeks or older.
  • Made with two active ingredients, fipronil and (S)-methoprene, this treatment stops infestations and prevents new ones.
  • Applied on a single point on your pet, the treatment rapidly covers your dog’s entire body and deposits in the sebaceous glands. These glands as a reservoir, continuously replenishing the treatment onto your pet, working even if your dog gets wet.
  • One dose of FRONTLINE Plus lasts 30 days.

Additional Info :

Item Dimensions 
Height4.5 Inches
Width0.75 Inches
Length5.75 Inches
Weight0.01 Pounds

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In Conclusion,

If your dog is on Nexgard and still has fleas, it may not be the product’s fault.

Nexgard is a prescription flea treatment that is applied to the back of your dog’s neck. It starts working within an hour after application, but it doesn’t kill ticks or other parasites. In order to control these pests, you’ll need to use an additional product like Frontline Plus or Bravecto.

You can also use a combination of products over time; for example, starting off with Nexgard and then switching over to Bravecto after three months. This allows you to keep your dog protected from fleas for longer than if you just used one treatment alone.

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