Protecting your dog from harmful parasites is one of the most important aspects of pet care. Fleas, ticks, worms, and heartworms can seriously impact your dog’s health if left untreated. Two popular solutions on the market are Nexgard and Nexgard Spectra, both trusted by veterinarians and pet owners worldwide.

But which one should you choose?

This article highlights the main distinctions between Nexgard and Nexgard Spectra to help you choose the most suitable option for your dog's health requirements.

Understanding the Threat: Why Parasite Protection Matters

Parasites aren’t just annoying—they can be dangerous. Fleas and ticks may lead to itching, discomfort, and skin-related problems, and anemia and transmit serious diseases like Lyme disease. Internal parasites like roundworms, hookworms, and heartworms can damage your pet’s organs and even be life-threatening if not treated.

What Is Nexgard?

Nexgard is a beef-flavored chewable tablet given once a month. It targets external parasites such as fleas and ticks. Its active ingredient, Afoxolaner, kills parasites quickly by overstimulating their nervous systems.

Benefits of Nexgard:

• Fast-acting flea and tick control
• Starts working within 4 hours
• Safe for dogs from 8 weeks old
• Easy to administer and well-tolerated

What Is Nexgard Spectra?

Nexgard Spectra is a more comprehensive chewable that combines Afoxolaner with Milbemycin Oxime. It offers protection against external and internal parasites, including deadly heartworm disease.

Benefits of Nexgard Spectra:

• It kills fleas and ticks
• Prevents heartworm disease
• Treats and controls roundworms, hookworms, whipworms, and lungworms
• Monthly all-in-one solution
• Ideal for dogs at risk of multiple parasites

Nutritional Format & Dosage

Both Nexgard and Nexgard Spectra are chewables that dogs typically enjoy. Depending on your dog's weight, they are available in different dosage strengths, ensuring safe and effective treatment.

Always use the correct weight-based dosage and follow your vet’s recommendation for the best results.

How Long Does It Take to Work?

• Nexgard begins eliminating fleas in just 4 hours and takes up to 24 hours to effectively kill ticks.
• Nexgard Spectra has similar fast action but also prevents heartworm when taken monthly.

Both options provide 30 days of continuous protection.

Which Dogs Need Nexgard Spectra?

You should consider Nexgard Spectra if:

• You live in an area with a high mosquito population
• Your dog spends time in parks, daycare, or boarding facilities
• Do you prefer an all-in-one monthly parasite protection plan
• You want to simplify your dog’s medication routine with a single product

Can Puppies Use Nexgard or Nexgard Spectra?

Both treatments are considered safe for puppies 8 weeks and older, given they weigh at least 2 kg. Still, it’s crucial to seek your vet’s advice before giving any medication to a young puppy.

Safety and Side Effects

Both treatments are generally well-tolerated. Mild side effects, though rare, may include:

• Vomiting
• Diarrhea
• Lethargy
• Skin irritation

If your dog has a history of seizures or sensitivity to medications, consult your vet before use.

Can Nexgard or Nexgard Spectra Be Used With Other Medications?

Yes, both products are often used alongside other medications. However, it’s best to check with your veterinarian to avoid drug interactions, especially if your pet is on long-term treatment for any health condition.

Storage and Usage Tips

• Store in a cool, dry place
• Give the chewable with or without food.
• Set reminders for monthly dosing.
• Never double dose if you miss one—wait for your next scheduled date.

Comparison between Nexgard and nexgard Spectra

You can use our comparison chart for the most popular flea and tick products.

Kills Fleas
Repels Fleas
Kills Flea Eggs and Larvae	Kills newly emerged fleas before they can lay eggs	Kills newly emerged fleas before they can lay eggs
Kills Ticks
Repels Ticks
Kills and/or Repels Mosquitoes
Prevents Heartworm
Prevents Roundworms
Prevents Hookworms
Prevents Whipworms
Other Parasites
Safe for Pregnant or Nursing Pets
When does it starts working	Kills 100% of fleas within 24 hours	Kills fleas within 6 to 8 hours
Application	Beef-flavored chewable	Beef-flavored chewable
Active Ingredient(s)	Afoxolaner	Afoxolaner, Milbemycin Oxime
Dosage	Monthly	Monthly

Final Thoughts: Which One Should You Choose?

• Choose Nexgard if your dog only needs protection from fleas and ticks and you're managing heartworm prevention separately.
• Choose Nexgard Spectra if you want broad protection in one chewable, especially if your dog is often exposed to mosquitoes or other dogs.

Still unsure? Consult your veterinarian for tailored guidance that considers your dog's age, weight, overall health, and daily routine.

Frequently Asked Questions (FAQs)

Q: Do I still need a dewormer if I use Nexgard?

A: Yes, if you're using Nexgard alone. But Nexgard Spectra already includes worm protection.

Q: Can I switch from Nexgard to Nexgard Spectra?

A: Yes, but consult your vet before switching treatments.

Q: Can my dog swim after taking Nexgard or Nexgard Spectra?

 A: Since both are oral chewables, bathing or swimming won’t affect effectiveness.