Petco Text Logo
Petco Pet Logo

  • Two Easy Ways to Start Earning Rewards!

Worms in dog poop after deworming with Nemex-2: Should I worry?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Male | neutered | 1 month and 9 days old | 13 lbs

I gave him first dose of Nemex-2 last week and today I noticed his poop has some part that looked like a small worm. I’m not sure which worm it is, but it wasn’t moving and I’m not sure if it even was a worm. He’s been eating and playing just fine. Should I be worried? Does this mean the dewormer will cover that type of worm?

1 Answer

Most Helpful Answer

Image profile

Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on March 10th, 2018

Nemex-2 kills roundworms and hookworms. Roundworms look like spaghetti, while typically you don't see evidence of hookworms in the feces without a microscope (this technique would show their eggs in the feces). I'm wondering if that you are seeing is a segment of tapeworm, which looks like a grain of rice. If that describes what you are seeing, then Nemex-2 does not kill tapeworms. You need a deworming medication that contains praziquantel to kill tapeworms, and an excellent deworming treatment that contains praziquantel is Drontal. You can get it from your vet. Given Luke's age, he should be dewormed every two weeks until he is three months of age, so you get a Drontal from your vet to give to him two weeks after you first gave him the Nemex-2. Given that he's eating and playing just fine, I wouldn't be worried about him. Good luck, I hope this helps!

Vote icon

2Pet Parents found this answer helpful

Related Questions

Petco Pet Education Center
Health & Wellbeing
A few days ago, we found flat white worms moving in my dogs poop. They have been in his poop only 3 times and now that he poops they are gone. Yesterday I started him on some medicine to remove any kind of worms. We dont have a lot of money to take h
It sounds as though you've done everything correctly by starting a dewormer after finding worms in George's stool. Some worms only shed intermittently, so it is not uncommon to only find worms once in a while. Remember that not every dewormer treats every type of worm. If the worms you found were long and flat or spaghetti-like, they may have been either roundworms or hookworms. Tapeworms tend to resemble grains of rice. Roundworms and hookworms are treated with most over the counter dewormers, including those containing pyrantel pamoate or fenbendazole. Tapeworms can be a bit trickier to kill, and are best treated with praziquantel-containing dewormers. I typically deworm twice, three weeks apart. If you notice any other issues, it may be worth taking a stool sample to George's vet to confirm that no microscopic parasites are also present. I hope that all goes well!
Updated on September 24th, 2025
Petco Pet Education Center
Health & Wellbeing
Took my puppy to the vet today for a check up. They were unable to get a stool sample so they gave him a mediocre for worms just in case, he just pooped and had spaghetti looking things in his poop, is this normal?
Yes, this does happen after a deworming treatment. It sounds like Tex had roundworms, and you are seeing the dead ones coming out. It means the deworming treatment is working. He will need another treatment in two weeks after the first. He should then be dewormed every two weeks until he is three months only, then every month until he is six months old. Then he should be dewormed regularly, every three months.
Updated on September 24th, 2025
Petco Pet Education Center
Health & Wellbeing
My 11 week old puppy was diagnosed with round worms. She was given two sets of medication. fenbendazole And dolpac. She also has giardia. The fenbendazole was in powder form given for 7 days once a day. We finished this powder yesterday but still see
Hello and thanks for using Boop by Petco! Parasite eggs are microscopic so I'm wondering if what you're seeing in the stool is actually eggs. It could be adult roundworms or even tapeworm eggs. It is not uncommon to see the adult roundworms as they are killed by the deworming process. If it is tapeworm eggs, you may need to end up treating for fleas (as this is how tapeworms are spread). The Dolpac should help treat for tapeworms and the praziquantel should be effective for giardia and roundworms. It is possible that you may end up needed to retreat but I suspect what you are seeing may be normal for the deworming process. Definitely take a fecal sample back to your veterinarian in about 3 weeks to ensure the infection is cleared. Also the prevent reinfection make sure to clean up your dogs feces from the yard. If at any time Echo seems to be acting ill or has diarrhea I would take her back to your veterinarian.
Updated on September 24th, 2025
Petco Pet Education Center
Health & Wellbeing
we have a 7wk old puppy.my husband saw worms in poop last night.. today we have been checking her stool and haven't seen any. we got her medicine to help until appt.. would we see the worms in every stool????
No, it would be highly unlikely to see worms in every stool. Worms only pass through the stool intermittently, just as they only shed their eggs intermittently. Be sure that the deworming medication that you purchased is appropriate for the type of worms that are present. If Diamond's worms resemble spaghetti, they are likely roundworms, whereas if they resemble grains of rice, they are likely tapeworms. Tapeworms can be a bit trickier to treat and will likely require prescription based dewormers from your vet. As fair warning, if Diamond has a large burden of worms, she may vomit or have diarrhea with worms present, but this is usually short-lived. I hope that all goes well!
Updated on September 24th, 2025
Petco Pet Education Center
Health & Wellbeing
My dog has round worm. I just gave him heart guard plus. Can or should I also give him a dose of Nemex 2?
Heartguard Plus also controls roundworms and hookworms, so there is no need to give the Nemex 2 now. However you should give your puppy Nemex in about two to three weeks in order to hit the worms that hatch from the eggs the Heartguard did not catch.
Updated on September 24th, 2025
Petco Pet Education Center
Health & Wellbeing
My one month puppies (3 out of 5) vomitted white-like worms and they have red to blackish kind of poop. I don't know what to do, I am planning to go buy a dewormer in the market since there are no available vet coz it's a sunday. Is it okay if I let
If they looked like spaghetti, they were probably roundworms. All pups get them from their mother, so it's expected that they would have them. They should be dewormed every 2 weeks starting at 2 weeks of age until 8 weeks, and then should have a fecal test run. You may see more worms coming out as they die. For the weight, I'd recommend checking weights daily with a baby or kitchen scale so you can bring them to the vet if they aren't gaining. I hope that helps!
Updated on September 24th, 2025
Petco Pet Education Center
Health & Wellbeing
How severe is my dog's hookworm infection if I see worms in her stool?
Pretty severe if you can see worms in Emma's stool. I recommend giving her Panacur, which is an OTC deworming treatment. She will need another deworming treatment two weeks after the first treatment to make sure all the worms are killed. She will need deworming treatments every three months after that.
Updated on September 24th, 2025
Petco Pet Education Center
Health & Wellbeing
My puppies both have a ringworm on their poop and on their vomit. What should i do?
I'm sorry to hear that you're seeing worms in Lucky and Kieron's poop and vomit! "Ringworm" is actually a term for a fungal skin infection, so I'm assuming you mean that you're seeing roundworms - these look like long, thin spaghetti noodles. You can get an over-the-counter broad spectrum dewormer like Strongid or Panacur from most pet stores to get rid of them, if you wish - just follow the instructions on the label for dosing, based on their weight. Or if you prefer, take a fecal sample to your vet's office to be checked. They can tell you for sure if you're seeing roundworms or some other type of parasite, and will prescribe an appropriate dewormer to treat your pups depending on what is found.
Updated on September 24th, 2025
Petco Pet Education Center
Health & Wellbeing
I bought a puppy about 4 weeks ago. The day I bought him, I watched the seller give him a liquid dewormer. That same day, I took him in for his 1st shot. A week later, I still noticed live, milky white worms in his stool, so I gave him a worm pill (S
This worm looks like a tapeworm segment, which would explain why the dewormers he has had so far have not been effective - tapeworms are more difficult to get rid of than most other intestinal parasites. Over-the-counter dewormers and Sentinel will not kill them. You will need to get a special prescription dewormer from your vet that contains praziquantel in order to get rid of the tapeworms - typically one dose now, then another in 14-21 days to ensure that all life stages of the parasite are killed.
Updated on September 24th, 2025
Petco Pet Education Center
Health & Wellbeing
My puppy is 3 months old. He has been treated for worms at the vet. Almost a month after that we did a reworming at home. But he's still pooping out flat white small worms. What could I do?
It could be that Roscoe has tapeworms, which requires praziquantel to treat. I'd see if the deworming medication you gave him contains praziquantel; if it does not, that's why he's still pooping out the worms. Drontal is an excellent deworming medication that contains praziquantel, and you can get it from your vet. Give him a dose as soon as you get it, then another in two weeks to kill all the worms. If the medication does contain praziquantel, give him another dose of the deworming treatment two weeks after the first. Because of the life cycle of intestinal worms, two treatments given two weeks apart are needed to kill all the worms. Best of luck, I hope this helps!
Updated on September 24th, 2025

Related Searches

Prescription Dewormer for Dogs Dog Dewormers & Worm Medicine Dog Food Prescription Dewormer for Cats Dog Stool Eating Deterrent Dog Treats & Chews Prescription Dog Digestive Medications Dog Health & Wellness Dewormer Treatments for Cats Heartworm Medicine for Dogs WormX Dog Dewormers & Worm Medicine WormX Dog Supplies Elanco Dog Dewormers & Worm Medicine PetArmor Dog Dewormers & Worm Medicine Sentry Dog Dewormers & Worm Medicine Earth Animal Dog Dewormers & Worm Medicine WormX Dog Health & Wellness HomeoPet Dog Dewormers & Worm Medicine Natural Remedies Dog Dewormers & Worm Medicine Cestex Prescription Dewormer for Dogs
image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Book Now

Sponsored