Merial Limited, packages the product in four different sizes based on the weight of your dog for the best effective treatment against fleas. Dosage amounts are very precise and are contained in an individually squeeze packet for easy application. When the below dosage tubes are used as directed Frontline Plus will break the flea and tick life cyle and kill fleas within 12 hours.
ACTIVE INGREDIENTS: On all sizes Fipronil: 9.8% (S)-methoprene 8.8% INERT INGREDIENTS 78.4% TOTAL 100.0%
Frontline Plus is a monthly treatment that is applied to the back of your dog or cats neck. Frontline Plus contains Fipronil. Fipronil is an insecticide that effects the nervous system of fleas and ticks. Frontline Plus also contains S-Methoprene. S-Methoprene is an insect growth regulator that inhibits the maturation of flea eggs and larvae.
Frontline Plus for Dogs (fipronil 9.8% and S-methoprene 8.8%)
Frontline Plus for Cats (fipronil 9.8% and S-methoprene 11.8%)
All dog versions, regardless of weight are the same composition, just different volumes. As such, it is possible to purchase a dose for a 100+pound dog, and portion it out for a 10 pound dog, provided you know what you're doing, and do a bit of research into correct volumes, safe storage of the unused product for months at a time, and have appropriate application equipment that is accurate to within a mL or so.
Frontline Plus minimum dose is 0.0306 mL/lb of body weight. The concentration of active ingredient is the same in all dose sizes and safe to use in both dogs and cats.