How Long Does It Take For Nexgard To Work On Fleas. Nexgard and nexgard spectra are generally considered safe for. Nexgard starts killing fleas in as little as four hours after administering and 48 hours for ticks.
According to the product website, it does not take long for nexgard to start working, as the medication works quickly to kill all fleas and ticks within 24 hours. After being given, its actions last for at least 5 weeks against fleas and up to one month against ticks. How long does nexgard take to work?
Many reviews from veterinarians and consumers support this statement, with only a few nexgard reviewers reporting that it took an extra 24 hours.
3 nexgard kills adult fleas before they get the chance to. After being given, its actions last for at least 5 weeks against fleas. How long does it take nexgard to kill fleas? Nexgard kills fleas within 8 hours and ticks within 48 hours.