3 month Bravecto Plus Spot-on Flea, Heartworm & Tick Treatment for large cats 13.75 to 27.5 lbs (6.25 to 12.5kg). Bravecto Plus for large cats comes in a purple color coded packet. Each vial will treat your cat for fleas up to 3 months, prevents heartworm for 2 months and controls paralysis ticks for 10 weeks. Bravecto Plus can be used on kittens from 11 weeks of age and over the weight of 2.6 lbs (1.2kg). This products packet is marked in kgs and packaged for use in Australia.