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What if my dog missed a deworming dose? How to adjust the schedule?

Updated on September 23rd, 2025

Pet's info: Dog | Labrador Retriever | Male | neutered | 7 years and 1 month old | 35 lbs

hi, i have 7 year old Labrador. About 15 days ago ,i gave one dose of deworming tablets, unfortunately i forgot to give second dose on the other day.Now, after three days i have to give the third dose, I am very much worried how to give the third and fourth dose after three days because i missed the second dose. Please help me regarding the same as soon as possible. thank you.

4 Answers

Most Helpful Answer

Answered By Jennifer Ladd, DVM

Veterinarian

Published on April 10th, 2017

I recommend deworming at 10 day intervals. It, of course, depends on the medications, but if you mixed a second dose I would recommend adjusting the remaining doses at the correct interval originally prescribed.

1Pet Parents found this answer helpful

Related Answers from Veterinarians

Answered By Andrea M. Brodie, DVM
Veterinarian
Don't worry about it. Just give a dose now, then another in two weeks. This should be sufficient. about two weeks after giving the last dose, I suggest you take a bit of fresh stool to your veterinarian for a fecal exam to see whether there are still worm eggs present.
1Pet Parents found this answer helpful
Answered By Ricardo Fernandez, DVM
Veterinarian, Veterinary Oncology Resident
Published on January 28th, 2019
Thanks for using Petco Pet Education Center, formerly Petcoach! It is not possible for us to answer this without knowing a lot more information such as the type of deworming medication you are referring to and also the worm you are trying to treat. It would be best to contact your veterinarian who prescribed it to know more exactly. Best of luck!
1Pet Parents found this answer helpful
Answered By Tomasz Wnuk
Veterinarian
Published on May 8th, 2018
There is no need to deworm Piglet now if she had the tablet 5 days ago. You should wait another 10 days before you deworm her again. The reason for that is that this medication kills all adult forms of the worms but it does not kill the eggs. It takes about 14 days for the eggs to became adult worms, so the second dose will get rid of the newly hatched parasites.
1Pet Parents found this answer helpful

Smart Picks for Smart Questions

Related Questions

My dog only took half the dewormer dose. When can I give more?

I would probably recommend waiting 3-7 days and give her a full dose instead, don't try mixing it with water as it becomes very bad to the taste this way, either mix it with food without breaking it or give it manually until swallowed.

Updated on September 23rd, 2025

Is my 4-year-old 20kg dog's deworming dose and schedule correct?

Hi, it is fine to give the two tablets together as a single dose. The dose is accurate for a 20 kg dog, how often your repeat it will depend on how frequently he comes in contact with parasites. If there are lots of worms in the environment, he could be wormed every 3 months but I would double check with your vet. Hope this helps !

Updated on September 23rd, 2025

My 37lb dog got underdosed with dewormer. Is he okay, what to do?

I am sorry I misread your question during my initial answer. If your pet received less than the dosage needed, then you would simply need to redose him another equal dose for a 20 lb dog and he will then get his accurate amount of dewormer. Typically dewormers are dosed in mg's, so if you look at the mg dosage for the weight range he should have had, it should be close to double the mg dosage for a 20 lb dog. I hope this helps! Take care.

Updated on September 23rd, 2025

My dog's deworming is overdue. Can I still give it to her today?

Yes, it is fine to deworm her today. You can either adjust the schedule to reflect the new dates or even just continue on with the old dates. It should be fine. Please post any additional questions.

Updated on September 23rd, 2025

Health & Wellness

When should I give my dog a second wormer dose for hatching worms?

The best time to give a second dose is approximately 20 days after the first dose. This should hit the worms that hatch from eggs remaining but before they can lay new eggs. If Brownie had such a severe case of worm infection, you may want to collect a fresh fecal sample about 3-4 days after the second dose of wormer and take that to your vet for a fecal exam. This sample should be clear.

Updated on September 23rd, 2025

My puppy missed dewormer. Is it safe to re-dose before vaccines?

Hi, I would not repeat the dewormer dose as you do not want to overdose her on the dewormer. She should be dewormed again in 3 weeks to make sure you got the life cycle of all the parasites she may have. If she is not having diarrhea or weight loss she may not even have worms. There is not a need to deworm her before the vaccines, they will still work properly regardless of the worming. I would go to your vet for vaccines and bring a stool sample with you to see if they could check it for worms. Depending on what eggs they see, they might recommend a different dewormed like pyrantel or panacur (fenbendazole). Either way, i would not redose her because she is so small and it is easy to overdose them and make them sick. If your vet suggests something different, you can follow his or her instructions. Good luck, i hope this helps!

Updated on September 23rd, 2025

Health & Wellness

My dog missed a heartworm doxycycline dose. What should I do?

If you mean you have only been giving it once daily instead of twice daily then go ahead and give your pm dose tonight and tomorrow start your twice a day dosing as per the label (1 with breakfast and 1 with dinner). Just make sure you give with food as doxycycline can cause tummy upset. It is okay you have only missed a few days and will get back on track tomorrow. When your vet is open again just call to let them know so they can note it in his medical record. I hope this helps and thank you for using Petco Pet Education Center, formerly Petcoach!

Updated on September 23rd, 2025

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