My dogs vomited after Comfortis. Should I switch flea prevention?

Yes, as long as he doesn't vomit within 1 hour it should be effective. Always remember to give it with a meal. If he continues to vomit after the 3rd dose of Comfortis, switch your product. Thank you for using Pet Coach.

Poor Clair! The Comfortis tablet often dissolves quite quickly, but Elanco reps have said that if a cat vomits within an hour of medication administration, the cat should receive another dose. To confirm this information and to report Clair's vomiting, I recommend calling the phone number on the Comfortis packaging.

Poor pup! Nausea is less common with Nexgard than with some of the other oral flea meds available (such as Comfortis or Trifexis), but can still happen in some dogs. Normally, giving the pill with a meal helps to prevent this, but it doesn't sound like it's helped much for your dog. It normally doesn't matter what type of food you give it with, because the purpose of giving with a meal is to slow absorption of the medication so that it's more gradual - it's the presence of food in the stomach that helps, rather than any specific ingredients. So if this hasn't helped with your pup, you may want to try a different medication next month - the vomiting isn't dangerous and is not a sign of toxicity problems or any other serious issues, but I know it's no fun for either of you to have him vomit every month! He might do better with Bravecto, or a topical flea/tick med such as K9 Advantix.

Hmm - it's odd that the Trifexis doesn't seem to be working as well, because it actually has the same active ingredient as Comfortis. The only difference is that it has an added ingredient for heartworm prevention, otherwise it's exactly the same drug. In my experience, both are extremely effective for fleas. I wonder if perhaps Tessa is continuing to pick up fleas from somewhere in the environment? It does take a few hours for a flea to die after biting her, so if she is continually being re-infested from the house or yard, it's very possible that you might see live fleas on her even if the medication is working properly. If you think this might be the case, I would recommend treating your house and yard with a premises spray such as Knock-Out. If you still want to get her something else for fleas, I would not recommend giving a Comfortis dose on top of the Trifexis, because this would just be giving a double dose of the same drug - I would be concerned about possible side effects from overdosing this medication. Instead, you could consider using a topical flea medication this month such as K9 Advantix, since this is a completely different medication that doesn't interact in any way with the Trifexis.

This is a very common side effect of Trifexis, if you know for sure that he didn't throw up for the first 2 hours after you gave it to him, then you do not have to treat again. the side effect will last up to 24 hours. next time try to give it a quarter tablet at a time every 15 minutes with food, this can prevent this side effect. alternatively you can switch to a different product.

Comfortis is a great product and should start killing fleas within 30 minutes. If you are still seeing fleas there are a few things to consider. First, make sure you give the Comfortis on a full stomach and make sure the dog keeps it down (sometimes dogs vomit after taking it). There are also probably fleas in the environment/home. I would recommend vacuuming all carpeted areas in your house and washing all of the pet's bedding. Even with the best flea control it can take up to 2-3 months to get the flea problem under control. Make sure you treat all the other pets in the household as well

Nexgard is an excellent product that provide tick protection in addition to flea prevention. Bravecto is a similar product, but it provides coverage against fleas and ticks for 3 months. All of these medications require a prescription. I would recommend discussing them with your vet to determine the best fit for Charlie.