Pets June 22, 2026 0 Comments

Credelio vs. Nexgard: Which Tick and Flea Fighter Will Actually Keep Your Dog Safe This Season?

Picking the perfect flea and tick preventive for your dog might feel like trying to choose the golden ticket in a candy shop—overwhelming and a tad confusing, right? With countless options vying for your attention, it’s easy to feel stuck. That’s why I decided to dig into two front-runners in the oral treatment aisle: Credelio and Nexgard. Both promise speedy action, a simple monthly treat your dog will likely gobble up willingly, and solid defense against those pesky parasites. But of course, there’s a twist—they differ in their secret sauce and exactly what creepy-crawlies they cover. In this breakdown, I’ll walk you through their strengths and quirks, helping you pick the one that suits your furry companion’s lifestyle best. Ready to dive in and find out which chew deserves a spot in your dog’s monthly routine? Let’s get rollin’! LEARN MORE

Choosing the right flea and tick preventive treatment for dogs is one of the most challenging tasks for canine parents, especially with the plethora of options available on the market. To make it easier for you, we have come up with two popular oral treatments, Credelio and Nexgard. Both treatments are used for their fast action, convenient monthly dosing and effective flea and tick protection. But they differ in their composition and parasite coverage.

In this blog, we’ll compare the efficacy of these two treatments to help you decide which one best fits your dog’s needs and lifestyle.

Let’s get started!

Credelio vs. Nexgard – An overview

Credelio is a convenient, highly palatable, chewable treatment that provides protection against fleas and ticks (American dog tick, Brown dog tick, Black-legged tick, Lone star tick and longhorned tick) for 30 days. Moreover, it is indicated for the prevention of Lyme disease as a direct result of killing Black-legged ticks.

Key Benefits

Highly effective, monthly flea & tick oral treatment
Beef-flavored chews for easy dosing
Kills adult fleas and prevents flea infestations
Treats and controls tick infestations (American dog tick, Brown dog tick, Black-legged tick, Lone star tick and longhorned tick)
Indicated for the prevention of Lyme disease
Reduces the incidence of flea allergy dermatitis (FAD)
Suitable for dogs and puppies from 8 weeks of age, weighing 4.4 lbs or greater

Nexgard is a potent, beef-flavored, monthly chewable treatment that protects against fleas and 6 tick species (American dog tick, Brown dog tick, Black-legged tick, Gulf Coast tick, Lone star tick and longhorned tick). Additionally, it is indicated for the prevention of Lyme disease as a direct result of killing Black-legged ticks.

Key Benefits

Efficient, easy-to-dose, flea and tick treatment
Fast-acting, monthly oral formula
Highly palatable, beef-flavored chews
Kills adult fleas and prevents flea infestations
Treats and controls tick infestations (American dog tick, Brown dog tick, Black-legged tick, Gulf Coast tick, Lone star tick and longhorned tick)
Indicated for the prevention of Lyme disease
Kills fleas that may cause flea allergy dermatitis (FAD)
Suitable for dogs and puppies from 8 weeks of age, weighing 4 lbs or greater

Credelio vs. Nexgard – Key Differences

Here are the main differences between Credelio and Nexgard:

Active ingredients: The primary difference between the two treatments is their composition. Credelio is formulated with lotilaner, whereas Nexgard contains afoxolaner as its active ingredient.

Tick coverage: Credelio offers protection against five tick species including American dog tick, Brown dog tick, Black-legged tick, Lone star tick and longhorned tick, while Nexgard protects against an additional tick, i.e. Gulf Coast tick.

Minimum weight: Credelio is suitable for dogs and puppies weighing 4.4 lbs or greater. In comparison, Nexgard is recommended for dogs and puppies weighing 4 lbs or greater.

Credelio vs. Nexgard – Key Similarities

Have a look at the similarities between Credelio and Nexgard:

Mode of administration: Credelio and Nexgard are both flavored, chewable treatments that should be administered orally, once a month.

Parasite coverage: Both Credelio and Nexgard kill adult fleas, treat and prevent flea infestations and treat and control tick infestations (American dog tick, Brown dog tick, Black-legged tick, Lone star tick and longhorned tick).

Lyme disease prevention: Credelio and Nexgard are both indicated for the prevention of Lyme disease as a direct result of killing Black-legged ticks.

Minimum age: Both treatments are suitable for dogs and puppies 8 weeks of age and older.

Safety: The safety of both treatments in pregnant, breeding and lactating dogs has not yet been evaluated.

Credelio vs. Nexgard – Comparison Table

The table below compares the characteristics of Credelio and Nexgard:

Credelio or Nexgard – Which one is better for your dog?

There is no single ‘best’ treatment when it comes to choosing between Credelio and Nexgard, as both are excellent parasite treatments for dogs and puppies 8 weeks of age and older. Both the treatments protect against fleas, ticks (American dog tick, Black-legged tick, Brown dog tick, Lone star Tick and longhorned tick), Lyme disease and flea allergy dermatitis (FAD) for up to a month.

However, Nexgard offers protection from an additional tick species, the Gulf Coast tick. Choose the one that suits your canine’s requirements and always consult your veterinarian for tailored recommendations.

FAQs

Q1. Are Nexgard chews safe for pregnant and breeding dogs?

Ans. The safe use of Nexgard has not yet been evaluated for pregnant, breeding and lactating dogs. Always consult your veterinarian before administering the treatment to them.

Q2. Can Nexgard chews be used with other treatments?

Ans. According to the product label, Nexgard chews can be safely used in conjunction with other treatments, such as vaccines, anthelmintics, antibiotics (including topicals), steroids, NSAIDs, anesthetics, and antihistamines.

Q3. Does Credelio protect against Lyme disease?

Ans. Yes, Credelio is indicated for the prevention of Lyme disease in dogs and puppies as a direct result of killing black-legged ticks.

Q4. How should I administer Credelio to my dog?

Ans. Credelio is available in a tasty, beef-flavored chew that should be administered with food, once every month.

Q5. What should I do if I miss a dose of Nexgard?

Ans. If you miss a dose or your vomits within 2 hours of administration, re-dose immediately and resume the monthly dosing schedule. Consult a veterinarian before redosing.