Gave my 15 lb cat Elanco dewormer for tapeworms...1 and half tablets. Have seen two small worms by anus. He vomited within a half hour a 5-6" tapeworm. Should I give him additional tablets since he barely absorbed them? The tapeworm must have migrated to his stomach? He eats mice and rodents. Pet's info: Cat | Domestic Shorthair | Male | neutered | 15 lbs

Poor Timmy! If he also vomited up the tablet, you will have to give him an additional deworming treatment. I would wait until tomorrow to give him another one, and give it to him with some food, such as boiled white meat chicken (no bones or skin). Tapeworms can travel into the cat's stomach, which is why you would have seen him vomit one. It sounds like he has a heavy burden of worms. He will likely need another treatment with the deworming tablet three weeks after first deworming treatment (the ones that stays down and isn't vomited up) to kill all the worms. I hope this helps.

If your cats didn't eat all the food, they probably did not get a high enough dose of the deworming medication to work correctly. The medication may kill some of the worms, but not all of them. You may notice dead worms in their feces indicating it's working, but sometimes nothing is seen at all. That is normal, and it doesn't mean the deworming medication isn't working. I would wait a week before giving them another deworming tablet, and this time give it to them whole. You may have to stick it in the back of their throat to get them to take it, but it's best for them to have the whole pill. After that, I would give them another deworming tablet in two weeks. This will make sure that all the worms are killed, as there will be worms in eggs which have not yet hatched at the time of the initial deworming treatment. They should then be dewormed every three months. Good luck, I hope this helps!