What is the duration of action for Capstar's flea treatment?

Capstar, the flea treatment for dogs and cats containing the active ingredient nitenpyram, begins working rapidly to eliminate adult fleas. The primary action of Capstar is to kill fleas within 30 minutes to a few hours after administration. However, its effectiveness in controlling flea infestations typically lasts for about 24 hours. This short duration of action means that while Capstar can help to quickly clear an individual animal of fleas, it does not provide long-term flea control.

This is why selecting the duration of action as 24 hours accurately reflects the product's use and its rapid efficacy in treating flea infestations, making it a popular choice for immediate relief rather than ongoing prevention. For longer-term control, additional treatments or preventatives would be necessary.