Fleas and ticks are more than a nuisance – they can transmit diseases like Lyme and tapeworms. As a pet parent, you want a preventive that is safe, effective, and fits your lifestyle. That is why the Nexgard vs Bravecto debate is so common. Both are oral chews that kill fleas and ticks, but they are not the same.
Nexgard (afoxolaner) is a monthly chew from Merial (now part of Boehringer Ingelheim). Bravecto (fluralaner) is a 12-week chew from Merck. The key difference? Duration. But safety, cost, and age requirements also matter. Here is the data you need to decide.
Quick Comparison: Nexgard vs Bravecto at a Glance
| Feature | Nexgard 🐾 | Bravecto 🐕 |
|---|---|---|
| Size | ✅ Small and large breeds 4+ lbs | ✅ Large breeds 4.4+ lbs (2.2+ with chew) |
| Energy Level | ✅ Any energy level | ✅ Any energy level |
| Trainability | ⚠️ Requires monthly admin | ✅ Every 3 months |
| Shedding | ✅ No effect | ✅ No effect |
| Good with Kids | ✅ Safe if dog tolerates | ✅ Safe if dog tolerates |
| Apartment-Friendly | ✅ Yes | ✅ Yes |
| Lifespan | ⚠️ Needs monthly replenish | ✅ 12-week protection |
| Typical Cost | $15-$25 per month | $40-$70 per 3-month dose |
Nexgard vs Bravecto: Personality at a Glance
Nexgard
- Monthly chew, fast-acting within 4 hours
- Beef flavor, easy to give as treat
- Kills fleas before they lay eggs
- Approved for puppies 8 weeks and older
Bravecto
- Lasts 12 weeks per dose (3 months)
- Large chew for larger dogs, may need splitting
- Starts killing fleas within 2 hours
- Approved for dogs 6 months and older
Duration and Convenience
Bravecto’s 12-week protection is its biggest selling point. One chew covers an entire season for many owners. Nexgard requires a monthly reminder. For busy families or those with multiple dogs, Bravecto reduces the chance of a missed dose. However, if your dog vomits shortly after taking Bravecto, you lose up to three months of coverage. With Nexgard, the loss is only one month.
💡 Affiliate Tip: Use a monthly pill organizer to avoid missed doses. Dog Pill Organizer
PropawPicks Verdict: Bravecto wins for convenience; Nexgard wins for flexibility.
Safety and Side Effects
Both are FDA-approved and generally safe, but there are nuances. Nexgard is labeled for puppies 8 weeks and older; Bravecto for 6 months and older. For very young puppies, Nexgard is the only option. The active ingredients are in the isoxazoline class, which has been associated with neurologic adverse reactions (tremors, seizures) in some dogs, especially those with a history. The FDA issued a warning in 2018. Both carry this risk, but some vets prefer Nexgard for dogs with seizure history because it clears the system faster (monthly vs. 12-week).
PropawPicks Verdict: Nexgard is safer for puppies and dogs with seizure history; Bravecto is fine for healthy adults.
Tick Coverage
Both kill multiple tick species, including black-legged ticks (Lyme), American dog ticks, and lone star ticks. However, Bravecto has a label claim for the paralysis tick (Ixodes holocyclus), which is more relevant in Australia, but some US vets consider Bravecto more effective for certain ticks. Nexgard starts killing ticks within 24 hours; Bravecto within 12 hours.
💡 Affiliate Tip: For heavy tick exposure, consider a natural repellent spray as backup. Wondercide Tick Spray
PropawPicks Verdict: Bravecto has a slight edge in tick speed, but both are excellent.
Flea Lifecycle Prevention
Both kill adult fleas quickly and prevent flea eggs from hatching if the flea bites the dog. Nexgard kills fleas within 4 hours and prevents infestations. Bravecto kills fleas within 2 hours. Both are effective, but because Bravecto stays in the system longer, it may provide more consistent control for dogs that are re-infested multiple times in a season.
PropawPicks Verdict: Both break the flea lifecycle; Bravecto’s longer duration may be more convenient for heavy flea environments.
Cost Analysis
Nexgard costs roughly $15-$25 per month, or $180-$300 per year. Bravecto costs $40-$70 per 3-month dose, or $160-$280 per year. For a single dog, Bravecto is slightly cheaper annually. However, if you have multiple dogs, splitting a Bravecto chew is not recommended (you cannot ensure accurate dosing), so each dog needs its own dose. That makes Nexgard potentially cheaper for multiple pets.
💡 Affiliate Tip: Save by buying multi-dose packages. Nexgard 3-Pack Deal
PropawPicks Verdict: Bravecto is cheaper per year for one dog; Nexgard is cheaper for multiple dogs.
Veterinary Recommendation
Many vets have a preference. Some recommend Bravecto for patients who miss doses, while others prefer Nexgard for its safety profile in sensitive dogs. Always consult your vet, especially if your dog has a history of seizures, is pregnant, or is on other medications. Both require a prescription.
💡 Affiliate Tip: Ask your vet about prescription discounts or online pharmacies. Discount Pet Meds
PropawPicks Verdict: Your vet’s advice is paramount; never switch without consulting.
Final Word from ProPawPicks
Nexgard and Bravecto are both excellent flea and tick preventatives, but they cater to different needs. Nexgard is the safer, more flexible monthly option, especially for puppies and dogs with health concerns. Bravecto is the convenient, extended-duration choice for healthy adult dogs whose owners prefer fewer doses. Consider your dog’s age, health, and your lifestyle to make the best choice.
Which Should You Choose?
Choose Nexgard
- Choose Nexgard if:
- Choose Nexgard if your dog weighs under 4 pounds (small min. weight)
- Choose Nexgard if you prefer a monthly routine
- Choose Nexgard if your dog has a history of seizures (Bravecto with caution)
- Choose Nexgard if you want the lowest cost per dose
Choose Bravecto
- Choose Bravecto if you forget monthly doses
- Choose Bravecto if you have multiple dogs (fewer doses to manage)
- Choose Bravecto if your dog is over 6 months and healthy
- Choose Bravecto if you need coverage for ticks including paralysis tick
Helpful Tools
Plan smarter with our free calculators:
ProPawPicks Recommended Products
📚 More Dogs Comparisons
Some links are affiliate links, at no extra cost to you. Disclosure · How we research.
Tags: Nexgard, Bravecto, flea and tick prevention, dog parasite treatment, oral flea medication, ProPawPicks, 2026