My 4-month-old puppy hasn't been dewormed. Is it too late to start?
Updated On September 23rd, 2025
My dog is 4 months old and has never been dewormed. Is it too late to start? If not how often should I deworm her from now on?
4 Answers
Most Helpful Answer
Published on April 10th, 2019
Hello, this is a great question for your puppy. It is not too late for parasite control. Given his age and history of no dewormer it is recommended to take a fresh stool sample to your veterinarian. They will evaluate for what specific types of internal parasites he may have and get him started at least on a general dewormer. The dosing schedule and frequency of the dewormer will be deterimined by your veterinarian and the results of the fecal analysis. Thank you.
11Pet Parents found this answer helpful
Related Answers from Veterinarians
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Published on April 14th, 2020
If Bella is not on monthly preventive( HeartGard, Sentinel, Interceptor, etc.), then she should be dewormed every 3 months. Submit a stool sample to your veterinarian to diagnose intestinal parasites. This way, you can be sure she is getting the correct dewormer and correct dose.
1Pet Parents found this answer helpful
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Published on March 28th, 2017
Hello! It is okay to start deworming at 8 weeks old, for sure. I'm not sure which product you are using, but you could go ahead and give her the 8 week dose, then check with your vet (let them know which product you are using), and continue deworming as recommended by your vet. You could always submit a stool sample to your vet as well, as there can be parasites present that the routine wormers don't kill off. Best of luck with your new puppy!
1Pet Parents found this answer helpful
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Published on March 21st, 2018
Hi, thanks for using Petco Pet Education Center, formerly Petcoach! Puppies should be dewormed multiple times and have their stool STILL checked for unusual parasites like coccidia and giardia. He will need another vaccine booster 3 weeks after the one the breeder gave. At that time I’d have him dewormed again and bring a stool sample. Your Vet will also start him on heartworm prevention which also has a dewormed in it. Besides taking the breeders word for it or seeing it on paper work there is mo other way to tell. I hope this helps!
1Pet Parents found this answer helpful
I just got a new puppy and she is 8 weeks old. She has not been de-wormed yet. I see the usual 2, 4, 6, 8 week schedule, but is there a "catch up schedule" since she missed her 2, 4 and 6 week dose? Thank you so much, I appreciate the help.
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