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Updated on September 23rd, 2025
Pet's info: Dog | Miniature Poodle | Male | neutered | 1 year and 1 month old | 15 lbs
First of all thank you for this app and your answers, this has been a life saver. I’m trying to find a flea/tick medication that agrees with Jack. He seems get lethargic and sick at his stomach on Simparica. I switched to Vectra3D and he seems to be fine but possibly a little itchy? He keeps trying to chew his back. But the smell bothers me. Someone suggested Nexguard. If I try that next month, is it safe to have been on 3 diff flea meds in a 3 month period? Is Nexguard good/safe?
2 Answers

Answered By Destini R. Holloway, DVM
Veterinarian
Published on February 5th, 2019
Answered By Sara Farmer, DVM
Veterinarian
Published on March 7th, 2017
Nexgard lasts 30 days so it is possible he could get fleas and ticks if his dose is delayed by a few days. You may want to see if your veterinarian would be able to dispense a single dose so he gets it on time - you may be able to skip a month of your automatic refills.
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