My dog still has worms after two deworming pills. What's next?
Updated On September 23rd, 2025
Pet's info: Dog | Border Collie | Female | spayed | 4 years and 4 months old
Can a dog still have worms after giving them 2 doses of pills not even a week apart?
5 Answers
Most Helpful Answer
Published on February 28th, 2016
Yes she sure can. It can take up to 1 week to rid the first round of worms in her system. Then as the worms in her system go through their 2 week life cycle (from baby worms to adult worms that you see in the poop) they should be treated again as a re-emergence of worms is seen. So the deworming schedule that I follow to ensure all worms (baby's and adults) are gone is as follows: 1) Deworm today 2) Deworm again in 3 days 3) Deworm again in 2 weeks But technically and most of the time you can get away with just doing #'s 1, and 3. Hope this helps!
118Pet Parents found this answer helpful
Related Answers from Veterinarians
-
Published on August 28th, 2019
Due to the life cycle of worms, it takes at least two deworming treatments given two weeks apart to kill all the worms. The first treatment kills the adults present while the second treats the worms that had no yet hatched from eggs during the first treatment. I would give Marshall a deworming treatment now, then another in two weeks. That should hopefully kill all the worms.
1Pet Parents found this answer helpful
-
Published on February 16th, 2017
Yes, Maryjane will be fine! Her pooping out worms is a sign the deworming treatment is working. She will need another deworming treatment in two weeks to make sure all of the worms are killed, then she will need one monthly until she is six months old. After that, she should be dewormed every three months :-)
1Pet Parents found this answer helpful
-
Published on December 6th, 2018
Tapeworm medication is specific, so double check to make sure that the dewormer you used was for tapeworms and not just roundworms and hookworms. It takes up to 7 days for the worms to evacuate out of her system. She can however get re-infected if she eats her own poop, continues to have a flea problem (which is where tapeworms come from) or if she eats another pets poop that has tapeworms. Tapeworms don't have to be retreated in 3 weeks b/c they just come right out and don't have a life cycle like the other worms do (hookworms and roundworms). If she had other worms, then yes she would need another treatment in 2 weeks, not 3. I hope this helps and best wishes with your pet Molly moving forward. Take care!
1Pet Parents found this answer helpful
-
Published on March 30th, 2018
Hi, thanks for using Petco Pet Education Center, formerly Petcoach! That's good that you see adult worms, it means the medication is working! I would have your Vet recheck a stool sample in 3 weeks to be sure no eggs are present. The 2 doses may be enough to kill the adult worms. Also he will be started on heartworm prevention that also is a monthly dewormer when you bring him to your Vet to continue vaccines. Have a great weekend!
1Pet Parents found this answer helpful
Hi my dog was still pooping worms and their are worms coming out on his anal area, he was dewormed last Feb. 26 with nematocide liquid solution can we deworm him again?.it is a small flat worm like a rice
So i wouldn't have to give my pup another deworming medicine after she had her first one but played with a dog that didn't have the medicine yet?
my dog just woke me up whining really loud so i let her out of the cage. when i let her out she walked to her puppy pads and let out waste. on the waste were SEVERAL worms. i just gave her some dewormer this past sunday. is it ok for me to give her m
My puppy seems to be expelling long tapeworms 12 days after the vet dewormed her. Is this normal? How long does the dewormer last/take to work? She doesn't have any fleas. Does this mean these worms were passed on from her mother? The picture shown
Hi! My puppy Is being dewormed for 3 days because the fecal test shows that he has parasites, but the last month (6/9) I dewormed him. For curiosity, how the dog get the worms or parasites and is it possible to prevent it. And last, how I know that t
After giving your dog the dewormer medication how long does this process last?
I started my puppy on deworming medicine on Saturday and it ended today I do not think he ingested all the meds as it was powder form. He had an accident today and I found a long white worm. Is it too soon to start him on another deworming medicine?
Is it safe to give Aubree a dewormer shot after i giving her drontal plus. I gave her the pill yeaterday but i dont think is working because i still see worms on her stool but they arent moving, also i was planning on giving her the shot on monday is
Hi I was just wondering why I have to deworm my dog in 2 weeks with drontal but I dont have to do that with dolpac and the dogs do have worms thanks. Should they be dewormed again in 2 weeks with dolpac
I have dewormed my little pup 2x and I would just like know what are some signs that they are gone?
Book an appointment with the pros – our expert vets are here to help.
