Most flea and tick failures are not failures of the product. They are failures of the calendar. A monthly chew works beautifully until the one month you forget, and a single lapsed dose is all a tick needs to latch on and pass along something serious. That is the real reason a newly approved once-a-year injection matters, and it is a more interesting story than “one less thing to remember.”
On July 10, 2025, the U.S. Food and Drug Administration approved Bravecto Quantum, an injectable flea and tick preventative that protects dogs for up to 12 months from a single shot given by a veterinarian. It is the first injectable version of fluralaner, an active ingredient that has been killing biting fleas and ticks within hours for years in chew and topical form. The drug is already cleared in more than 50 countries, with approvals in Australia and New Zealand in 2023 and the European Union in 2024.
Why a Year of Coverage Changes the Math
Every other format on the market shares one weakness: it depends on you. Monthly topicals, chews that last about 12 weeks, and collars good for roughly eight months all leave a window for human error, and parasites are opportunists.
“The dangerous moment is almost never the day you give the dose. It is the week after the dose ran out and nobody noticed,” says Dr. Ravi Mehta. “An injection a vet administers takes that gap off the table entirely, which is exactly where most real-world protection breaks down.”
There is a seasonal version of the same trap. Plenty of owners treat fleas and ticks as a summer-only problem and quietly stop in the fall, but ticks need only a few warm days to become active, and they can pose a threat year-round. A 12-month shot sidesteps the temptation to take winters off.
Read the 8-Versus-12-Month Fine Print
Here is the detail that gets lost in the convenience story. Bravecto Quantum delivers 12 months of protection against most common ticks, including the black-legged (deer) tick, the American dog tick, and the brown dog tick, plus 12 months of flea prevention. But against the lone star tick, coverage runs eight months, not twelve. The eight-month figure is not about your dog’s size or a vet’s discretion, as it is sometimes described. It is about which tick you are trying to outlast.
In March 2026, the FDA expanded the label further, adding the Asian longhorned tick and the Gulf Coast tick to the list of species covered for a full 12 months. If you live where lone star ticks are common, talk to your vet about whether a single annual shot is enough or whether you need a bridge for those final months.
The Practical Details: Age, Price, and Safety
Bravecto Quantum is approved for dogs and puppies six months of age and older, and it is given as a single subcutaneous injection in the clinic, never at home. Expect to pay roughly $149 to $219 per year for the dose, before any office-visit fees, with rural clinics generally at the lower end and metro practices at the higher one.
Because a vet administers it, they can review your dog’s history first and watch for the rare side effects, which can include muscle tremors and seizures. That clinic visit is a feature, not a hassle.
“An injectable is not automatically the right call for every dog, and that is the whole point of putting a vet in the loop,” Dr. Mehta says. “If a pet has a seizure history or a known sensitivity, a long-acting shot is harder to undo than a monthly chew you can simply stop. A real medical-history review is what makes it the safe choice rather than just the convenient one.”
The bottom line: the one-shot format is a genuine step forward for the many households that struggle to stay on schedule, which is most of them. Just go in with your eyes open about the tick species in your area, and let your vet decide whether your dog is a good candidate.
References
- FDA: Freedom of Information Summary, Bravecto Quantum (approval July 10, 2025)
- Merck Animal Health: FDA Approves Bravecto Quantum (fluralaner) for Extended-Release Injectable Suspension
- Merck Animal Health: FDA Adds Asian Longhorned and Gulf Coast Tick Coverage for 12 Months
- PetMD: Bravecto Quantum for Dogs — Uses, Side Effects, and Safety
