Comfortis Vs Capstar for Dogs and Cats
Which Instant Flea Pill Works Best?
When your pet has fleas, you want to kill them NOW but what’s the best product to do that with?
You want to provide them with relief, not nausea and side effects so we’re going to break it down for you and tell you exactly what the differences are between Comfortis and Capstar, two of the leading instant flea killing pills available.
What Do They Do?
Both Capstar and Comfortis are meant to be used as a jumpstart for your flea program. All fleas will be dead in as little as 4 hours and no later than 24 hours. Capstar does this using nitenpyram, a neurotoxin to fleas. It kills all adult fleas within 24 hours and is safe for use in puppies and kittens as young as 4 weeks old as long as they weigh at least 2 pounds. It’s only effective for 24 hours.
Comfortis uses another flea neurotoxin, spinosad. It starts killing fleas within 30 minutes and provides protection for a full 30 days. It’s safe to use in puppies and kittens 14 weeks of age and older that meet weight requirements: 3.3 pounds for dogs and 2 pounds for cats.
Side Effects and Warnings
Side effects are pretty much identical between Capstar and Comfortis. The most common side effect is vomiting and you can reduce the odds of this happening just by administering the pill with food. Other side effects include:
- Increased appetite
- Excess vocalization
- Hives or red skin
There are two primary differences between these two chewable flea pills.
- Comfortis is effective for a full 30 days but isn’t safe to use on small or really young puppies or kittens.
- Capstar is safe to use on young, small animals but is only effective for 24 hours.
In other words, it will kill the fleas but you need to start a regular flea control regimen immediately.
Which pill is most suited to you is dependent upon whether you need a quick fix or a long-term solution. Typically, Capstar costs a bit less than Comfortis so it may be a solution for immediate relief if you’re treating your home as well and your pet doesn’t spend much time outside.
If you’ve used either Capstar or Comfortis, please tell us about your experience in the comments section below.