EFFICACY: HEARTWORM
Broad spectrum = prevents heartworm disease
Innovative approach to heartworm (Dirofilaria immitis) disease prevention3
![](https://www.merck-animal-health-usa.com/wp-content/uploads/sites/54/2020/08/plus-heartworm-graph.png)
BRAVECTO PLUS was 100% effective against heartworm disease for 2 months. Uniquely, in the studies, the cats were treated 60 days before 3rd stage larval infection, thereby proactively protecting the cats.3