When raising a cat, one thing you should pay attention to is that your cat may have worms. Cat worms not only affect the health of your cat, but they can also infect you as well as other pets. Therefore, it is crucial to deworming cats regularly.

However, the question that people are often wondering is: What to expect after deworming a cat?

We will help you to answer that query today. But first, let’s take a look and get some ideas at the necessary things.

What are the types of worms, and how can your cat get them?

what to expect after deworming a cat
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There are many types of worm with different sizes and shapes; however, the most popular ones are roundworms, hookworms, tapeworms, and heartworms.

Roundworms and hookworms can be found in the intestines while tapeworms live in the intestines as well as other organs, such as the liver. On the other hand, heartworms, which are brought by mosquitoes, live in the heart and is quite dangerous since it can cause death.

Most people don’t know that intestinal worms exist in kittens’ bodies before they are even born. These worms are passed onto the kittens from the mother’s body or milk.

Eggs or infected parts in feces is also a reason for worms in cats. They come in contact with the feces and bring parasites into the body when grooming themselves.

Also, cats can ingest worms through hunting and eating rodents or fleas that carry worm eggs. Moreover, being bitten by worm larvae can cause the infection as well.

How to identify whether your cat has worms?

Although some cats will show a lot of visible signs, some of them will not have any visible symptoms. If you observe your cat and notice that it has these symptoms below, please take your cat to the vet right away.

  • Unknown weight loss with a change of appetite
  • Bloated stomach or swollen abdomen
  • Lethargy
  • Vomiting
  • Diarrhea
  • Coughing constantly
  • Breathing difficulty
  • Coarse or dull fur
  • Rubbing or dragging their bottoms across the ground
  • Visible traces of worms in cats’ skin/fur around the stool area or in their feces.

When should you deworm your cat?

Deworming your cat at a young age is truly necessary.  A kitten should be dewormed at the age of 4, 6, and 8 weeks, and the treatment should be repeated when kittens reach the age of 4 and 6 months.

In spite of being less affected by worms, adult cats still need to be dewormed every 2 to 6 months. Anyway, the schedule depends on the situation and habit of each cat, so it is recommended to consult with your vet for personalized advice.

What to expect after deworming a cat?

One thing that you must do after deworming your cat is to observe your cat’s situation carefully. Treating for worms is essential, but you should keep in mind that dewormers are still toxic chemicals; therefore, your cat might suffer the side effects within 24 hours after treatment.

Side effects which are commonly seen in cats are:


Your cat’s stomach will go through a lot of things when it is in the deworming process. The effect of medication along with the parasites going through the digestive system is the reason causing vomiting in cats.

You should immediately bring your cat to the veterinarian in case the cat has this symptom within an hour of taking the medication since your cat may suffer from dehydration.

Loss of Appetite

Due to the strength of dewormer medications, the appetite of your cat may decrease of it may even give up eating until the medication finishes dealing with the worms. If you see that your cat keeps having this symptom for more than 3 or 4 days, please contact your veterinarian for assistance as your cat may need another treatment to help to get its appetite back.


Another side effect that your cat may have is diarrhea. Also, you may notice the signs of worms or worm segments in your cat’s stool or feces. This often causes worry for cats’ owners; however, this is not a problem to be scared of since it is just the way a cat’s body fight off and get rid of the parasites.

On the other hand, bloody stool may occur to your cat as well. Nevertheless, these symptoms should only last for only two to three days. In case they happen for a more extended period than that, you should seek help from the veterinarian.

Increased Salivation

Increased salivation is a common symptom that your cat may suffer from after a deworming. Anyway, similar to the above ones, this side effect should only last from two to three days. Contact the vet immediately if your cat starts foaming at the mouth rather than salivating. It could go through more severe conditions, like, rabies.

Besides all mentioned side effects, other symptoms that can happen to a cat are lethargy, non-alertness, or white gums.

How to prevent your cat from being infected by worms?

You can refer to below suggestions to decrease the risk of worms in your cat:

  • Give treatments to kittens at their young ages.
  • Provide your monthly cat worms preventive medication as consulted with the vet.
  • Always keep an eye on your cat so that you can identify the symptoms and deworm your cat timely.
  • Clean your cat’s litter box daily.
  • Keep your house clean, especially the backyard.
  • Consider keeping your cat indoors frequently as it will reduce the chance that your cat will get an infection from feces of other infected cats, fleas or rodents.
  • When you bring your cat to public places, such as playgrounds or parks, remember to dispose of feces immediately with sanitary tools.

Check out: Raw diet for cats

FAQ about deworming cats

1. Why do we need to deworm cats?

This is the origin of all the stories we are discussing in this article. Taking care of pets, including cats, is a job that requires a lot of work. And each stage plays a different role. Deworming is very important if you want your cat to be in good health and able to grow healthy.

Cats are very susceptible to the types of helminths such as hookworms, pinworms, threadworms, tapeworms, etc. These worms live inside the animal’s body, causing intestinal and digestive diseases such as respiratory, vomiting, loss of appetite, weight loss, weakness or even death. It is not only dangerous for cats but also the risk of transmitting the infection to humans and other pets when handled without treatment. Therefore, it is necessary to conduct periodic inspection and deworming for cats to eliminate the parasitic worm problems in them.

2. Can cats become infected with helminths after being dewormed?

It sounds difficult, but in fact, this is entirely possible. The helminthicides are very powerful and help to eliminate the helminths after one use. But as analyzed above, there are many possible causes for this problem in cats, one of which is their living habits.

Thus, if they do not change their living habits (for example, stay away from contaminants), the risk of catching helminthiasis after being treated is very high.

3. What to note before deworming cats?

* Give cats a half-day fast before deworming

There is such a new bring the best effect. Usually, you should cut your cat food in the evening by half. Then until the next morning, after cats wake up enough for a long time, you give cats deworming medicine is the most reasonable.

You can insert the medication directly into a cat’s mouth. Or, blend it into a delicious food (like a pate) to lure your cat.

Note: Give cats deworming books with a sufficient amount of medicine according to the directions on the medicine label. If you give your cat an overdose, it will lead to a cat drug shock, a tired person, stop eating, which can lead to illness.

* Mix more digestive enzymes into food

If your cat does not have a good digestive tract, you can mix it with yeast to feed the cat after deworming. Because of a new worm book, you should not feed your cat a lot, but only a small amount (half a serving, for example). The next day, let them eat and drink normally.

* Wrap your cat up

When cats use medicine, they can struggle, scratch, squirm and be uncomfortable. You can wrap your cat in a small blanket or towel and leave only the head of the cat outside.

4. How should deworming for kittens be scheduled?

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Worms have a strong effect on the cat’s digestive system, especially kittens because they generally have a weak internal organ system. As such, ensuring a proper deworming schedule for your cat from an early age is also a way to better protect the health of your furry friend.

Depending on each stage of the cat’s development, the deworming schedule for them will be adjusted accordingly.

  • When the cat reaches 3 – 8 weeks of age: conduct worms every 2 weeks. When the cat is 3 weeks old: 1st lump. Repeat when the cat is 5 and 7 weeks old.
  • When cats reach 2 – 6 months of age: perform worms once a month. That is, after the worm cast when they are 7 weeks old, exactly 1 month after you do the fourth worm. Repeat monthly until they are 6 months old.
  • When cats reach 6 – 12 months of age: Every 2-3 months throwing worms 1 time. So from the injection at 6 months of age, until they are 8 months, 10 months and 12 months worms.
  • When cats reach 1 year of age or older: 1 worm drop every 6 months until the end of the cat’s life cycle.

5. How easily are cats infected with helminths?

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Some cats are born to explore and explore but others like to spend time at home behind the door. If they do not roll around in the garden, play with mice or interact with other animals, then the question is: do you need to care about parasites? Sadly, even cats who are well cared for in the best environment can still be infected with worms.

If your cat does not like to explore the outside world, you don’t need to worry about parasites, of course, that’s understandable! However, parasites are everywhere, even if cats just like to spend all day on the sofa can still be infected with tapeworms.

Cats that regularly stay at home are still at risk of tapeworm infection. Tapeworms have a long flat shape and divide into segments. They parasitize in the host’s small intestine. Cats are highly susceptible to tapeworms, most commonly swallowing fleas containing tapeworm larvae. Fleas are ubiquitous, they can hide in your clothes, pet’s body or any pets who come to your house. Cats do not know that they can catch flukes at any time, just through swallowing fleas when they are carefreely grooming their fur.

Cats do not know that ingesting flea bites during cleaning will make them more susceptible to infection.

Also, worm eggs can attach to objects such as shoes or clothing.

In particular, worm larvae burrow through the placenta or from the mother’s milk passed to kittens. So, at the time of birth kittens were at risk of worms before you were welcomed home. Besides, roundworms and tapeworms can be transmitted from the gastrointestinal tract if the cat eats or contacts an infected animal.

6. Should not deworm the cat in any case?

  • The cat is sick, in poor physical condition.
  • Pregnant cats are about to give birth.
  • Hot weather.

7. Some products to support the cat deworming process

These products should not be used indiscriminately. Make sure your cat has been fully tested by the vet. And besides directly following the instructions included in the product, you need to listen to the opinions of experts. Do not turn yourself into a “domestic” veterinarian as it will directly endanger your beloved cat.


Usage of dewormer infections are common as it can eliminate parasites; still, you should always seek advice from a veterinarian before letting your cat go through deworming. By doing that, your cat will have proper medication, and you can be fully prepared to deal with the side effects as well.

So, what to expect after deworming a cat? You’ve got the answer. Also, you can Ask Vet below Chat or Click Here.

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