How to treat white roundworms in my new Shih Tzu puppy immediately?

Poor pup. Roundworms are very common in puppies, because they can get infected while still in their mothers tummy (in utero) and through the mother's milk. To treat roundworms Harry just needs a broad spectrum dewormer like Pyrantel Palmoate or Fenbendazole. 1 treatment given today and then again in 2 weeks. To prevent roundworm infestations in the future Harry needs to get on a monthly heartworm preventative, which has natural intestinal dewormer in it as well. Harry will need to see a vet to get a prescription for the heartworm preventative (i.e. Heartgard, Trifexis, etc), but the intestinal dewormer can be purchased through your local pet store. Your pup should be just fine once he is treated. : )

Looks like roundworms. There are many OTC dewormers that should work just fine. You can look for one that contains Pyrantel. It is still a good idea to have a vet diagnose what worms or other intestinal parasites are present. And Cujo will need re-treatment in 3 weeks to kill adults that hatch from eggs in the intestines right now. Here is a good product: https://www.petco.com/shop/en/petcostore/product/8-in-1-safe-guard-4-canine-dewormer?bvstate=pg:2/ct:r

There will be more! Give Toby a deworming treatment like Panacur or Drontal. He will need one every two weeks until he is 12 weeks old. Then one every month until he is six months of age, and after that he should be dewormed once every three months.

I'm wondering if you mean Zo has worms. The best thing to buy him is a deworming treatment called Panacur. It kills roundworms, whipworms, and hookworms. You can get it at your vet's office. He will need a second deworming treatment two weeks after the first to kill all the worms. The first treatment kills the adults present while the second one kills the ones that had not yet hatched from eggs at the time of the first treatment. He should then be deworming monthly until six months of age, and then every three months thereafter. I hope this helps!

These are roundworms. They are a common parasite for puppies to acquire at birth and don't tend to cause any major problems. They are easily treatable with deworming medication that can be purchased at a pet store, or a veterinary office. I recommend having a vet prescribe the medication to ensure it's safe for Oreo and proper instructions are given. I hope that helps and all is well with Oreo.

This looks like roundworms. You need to deworm this puppy immediately with pyrantel pamoate and febantel. They can be dewormed with this product as young as 2 weeks of age. I suggest you give a dose now and then again every 3 week until the puppy is at least 4 months old. ( https://www.marshallspetzone.com/health-care/4933-7723-savavet-kiwof-dewormer-puppy-syrup-15-ml.html#/77-pack-2 )

This is a roundworm indeed, you need to go to the pet shop, you should be able to find a puppy dewormer there, it should only take a few days until your puppy is worm free after the treatment is given.