Many dog owners are concerned about the potential of fleas to infest their furry companions. NexGard, a popular chewable flea and tick preventative, offers a convenient and effective solution. However, a common question arises: does NexGard kill fleas that are already present on a dog? This article will delve into the effectiveness of NexGard in addressing existing flea infestations.
Understanding NexGard’s Mechanism
NexGard is a monthly chewable treatment that contains afoxolaner, an active ingredient that targets the nervous system of fleas and ticks. When ingested, afoxolaner is rapidly absorbed into the bloodstream, reaching effective levels within hours. This ensures that NexGard offers fast-acting protection against new infestations.
NexGard’s Action on Existing Fleas
While NexGard is highly effective in preventing fleas from establishing an infestation, it is not designed to kill fleas that are already present on your dog. This means that when you first administer NexGard, you might still see fleas on your pet.
Why NexGard Doesn’t Immediately Kill Existing Fleas
- Mode of Action: NexGard’s action focuses on preventing fleas from completing their life cycle. It disrupts the flea’s nervous system, leading to paralysis and eventual death. However, this process takes time, typically 24-48 hours.
- Fleas’ Life Cycle: Fleas have a complex life cycle involving eggs, larvae, pupae, and adults. NexGard primarily targets adult fleas and prevents them from reproducing. It doesn’t directly affect the other stages of the flea life cycle.
Treating Existing Flea Infestations
To address fleas already on your dog, a combined approach is necessary:
- NexGard for Prevention: Continued administration of NexGard will prevent new fleas from establishing an infestation.
- Additional Treatment for Existing Fleas: You can use a separate product specifically designed to kill existing fleas. Popular options include:
- Flea shampoos: These shampoos contain insecticides that kill fleas on contact.
- Flea sprays: These sprays are applied directly to your dog’s fur and kill fleas on contact.
- Flea combs: These combs are used to physically remove fleas from your dog’s fur.
Importance of Environment Control
It’s crucial to remember that fleas don’t just live on your dog. They also reside in the environment, primarily in carpets, bedding, and furniture. To effectively control a flea infestation, you need to treat both your dog and the environment:
- Vacuum regularly: Vacuum your carpets, upholstery, and bedding to remove fleas and their eggs. Dispose of the vacuum bag or contents immediately.
- Wash bedding: Wash your dog’s bedding and any other materials that come into contact with your pet in hot water.
Consulting a Veterinarian
If you are facing a severe flea infestation, it’s always a good idea to consult your veterinarian. They can help you determine the most effective treatment options and provide advice on how to prevent future infestations.
Conclusion
While NexGard is an excellent preventative for fleas, it doesn’t kill fleas that are already present on your dog. To manage an existing infestation, you’ll need to use additional treatments along with ongoing NexGard administration. Remember that environmental control is vital to prevent reinfestation. By following the steps outlined above and seeking professional guidance, you can effectively manage flea infestations and keep your furry friend happy and healthy.
FAQ
Q1: Does NexGard kill fleas already on my dog?
NexGard is a chewable medication that kills fleas, but it doesn’t kill fleas that are already on your dog. It is a preventative medication, meaning it works by preventing fleas from reproducing and killing any new fleas that bite your dog. However, it won’t directly eliminate existing fleas.
To effectively address an existing flea infestation, you’ll need to use a separate treatment, such as a flea spray, shampoo, or comb. You should also thoroughly vacuum your home and wash bedding to remove any fleas and eggs that may have fallen off your dog.
Q2: How does NexGard work to prevent fleas?
NexGard contains afoxolaner, an ingredient that acts as an insecticide, targeting the flea’s nervous system. When a flea bites your dog, it ingests afoxolaner, causing paralysis and death within 24 hours. This prevents the flea from laying eggs and spreading the infestation.
While NexGard is effective in preventing fleas, it is important to note that it does not offer immediate protection. It can take a few days for the medication to reach effective levels in your dog’s bloodstream. Therefore, it is recommended to apply NexGard before an anticipated flea exposure to ensure maximum protection.
Q3: How often should I give my dog NexGard?
NexGard is available in monthly chewable tablets. You should give your dog one chewable tablet every month, even during the off-season, to ensure continuous protection.
However, it’s always best to consult with your veterinarian to determine the appropriate dosage and frequency for your individual dog. They can consider factors such as your dog’s weight, breed, and specific flea risk.
Q4: Are there any side effects associated with NexGard?
NexGard is generally safe and well-tolerated by dogs. However, like any medication, it can have potential side effects. Common side effects include vomiting, diarrhea, and decreased appetite.
These side effects are usually mild and temporary, and they typically disappear within a few days. In rare cases, more serious side effects, such as lethargy and tremors, can occur. If you notice any unusual symptoms in your dog after administering NexGard, it is important to contact your veterinarian immediately.
Q5: Can I use NexGard on puppies?
NexGard is not recommended for puppies under 8 weeks old. It is important to check with your veterinarian to determine the appropriate flea prevention method for your young puppy.
There are other flea prevention options available for puppies under 8 weeks old, such as spot-on treatments. These options may be more suitable for their delicate systems.
Q6: How can I tell if my dog has fleas?
There are several signs that your dog may have fleas. You may notice tiny black dots, known as flea dirt, in your dog’s fur. This dirt is actually dried flea feces.
Your dog may also be scratching excessively, especially around their tail, back, and neck. You might even see small, reddish-brown insects moving around your dog’s fur.
If you suspect your dog has fleas, it is important to contact your veterinarian for proper diagnosis and treatment.
Q7: Can I use NexGard with other flea treatments?
It is generally not recommended to use NexGard with other flea treatments, especially topical treatments like spot-on medications.
Using multiple flea treatments at once can increase the risk of side effects in your dog. It is always best to consult with your veterinarian before using any medication on your dog, including flea treatments. They can help determine the best approach for your individual dog’s needs.