Cat scratching after Cheristin. Can I give Capstar for fleas?

Hi and thanks for using Petco Pet Education Center, formerly Petcoach! Sorry to hear about the flea problem. Yes, you can use Capstar with any topical flea/tick medicine as far as I know. I don't know of any that Capstar is contraindicated. Great question and good luck.

Capstar comes in two sizes. Cats should get the 11.4mg. A half dose will work to an extent but will not fully work since the dose is smaller than it should be. Yes, you could give the other half tomorrow but it would be better to give the full amount. The larger size is 57mg and half of that would be an over dose for a cat. I do not recommend to give this to a cat. Also, capstar only lasts 24 hours. I hope this helps and please feel free to post any additional questions.

Capstar is a very safe medication and I would not have concerns about using it even in an older cat as long as there are no known underlying diseases. That being said, Capstar will not prevent future infestations so if Frontline isn't working you will need a different preventative. I typically recommend asking your veterinarian what product seems to work best in your area. A final not - if Dory is in the barn apartment at al there probably are now flea eggs and potentially larvae, and soon there will be adults in the apartment. If they have no host (i.e. if you get Dory on a good preventative with kills fleas quickly) and you continue preventative for three months you may not need to treat the environment, but spraying or bombing the apartment and/or vacuuming/washing weekly could help get everything under control more quickly.

You can use Capstar concurrently or start a topical the next day. Capstar starts to work to kill adult fleas on your cat within 30 minutes. Within 6 hours all adult fleas on your cat should be dead or dying. It can be given daily if necessary.

Yes, you can give Aries Capstar in addition to the topical Sentry medication. Be sure to continue applying topical flea prevention monthly in order to break the flea lifecycle. When he is due for the next dose of medication, I would recommend using a higher quality (both safer and more effective) flea preventative, such as Advantage, Revolution, or Bravecto. If you have any other dogs or cats in the house, be sure to treat all pets with good quality flea prevention. I hope this helps and that all goes well!

Yes you can most certainly use a Capstar this close to surgery because this medication usually works within 1 hr, lasts only 24 hrs and has no affect on the cardiovascular or respiratory system, so its safe to use same day of surgery if needed. In fact, in practice we often give this medication to surgery pets right before their surgery if they have fleas to prevent the spread of fleas to other hospitalized pets. So no worries. It wouldn't hurt to let them know you gave the medication. However you should consider putting Darcy on a flea preventative as well to prevent re-infestation, because chances are that the fleas have laid eggs in the environment as well, and since Capstar is not a preventative, it will be out of her system after 24 hrs has passed.

Yes you can as long as the shampoo says it is safe for cats. This will only get the fleas that are currently on them off. After the capstan wears off in 24 hours, it will prevent more fleas from jumping on him. Also, keep in mind that fleas don't live on the cat, they live in the environment. I would recommend to treat the house and yard for fleas as well. And I would recommend to get Oatmeal started on a high quality monthly flea preventative sold by your vet like cheristan, comfortis, etc. I hope this helps.