What to Expect After Deworming a Cat: Cat Deworming

WORMS!! Is it a solid ground to panic? Absolutely not! In most cases, they are very simple, not much harmful and easy to treat. There’s nothing to get worried. It’s very natural for cats to get attacked by worms at some point in their life. Here we do some research about cat deworming and explain to you what to expect after deworming a cat.

Though it’s not a reason to get anxious, we must not avoid it, because long term worm infestation can be serious. Consulting a vet is a must for accurate medicines and guidelines. Proper care and treatment are likely to bring a positive result in a few days even within 24 hours. 

When we have a cat, we just don’t own her, we have also got certain responsibilities toward them. From feeding them the best food to maintaining their good hygiene is our obligation as they are dependent on us for most of their needs. De-worming our cat is very important to keep her personal hygiene intact and give her a healthy cheerful life.

Let talk about: Cat Deworming: What to Expect After Deworming a Cat.

De-worming- What does it mean?

In case of cats, the term de-worming means to get rid of the intestinal worm infestation through medication. Cats roam around all the time and are very vulnerable to getting infected by worms. They have a tendency to taste everything they get around them. Even cats don’t have the conscience to understand that faeces are not worthy of tasting, In fact, these cute, small creatures are too innocent! So, keeping a close eye on their activities is very important to keep them healthy.

Types of worms a cat can get:

Types of worms :

Most common type of worms:

  • Roundworm
  • Tapeworm
Other types:
  • Hookworm
  • Whipworm
  • Heartworm

Table: Comparison of different types of feline worms.

Type of Worms


Infected Area

Way of Infection


Round worm

Generally, they can grow up to 6 inches.

They look like spaghetti.

Can be found in vomit and faeces.

200,000 eggs can be laid just in one day by the female roundworms.

Eating fleas that carry worms.

Being bitten by worm larvae which penetrate the skin.

Kittens can get them from nursing mother.

Weight loss, dull hair

Potbellied appearance


Can become (4 – 8) inches.

They look like strips of tape composed of many segments which are easily broken.

They are found in faeces and look like rice grain or sesame seeds which are about quarter inch long.

Eating fleas that carry worms.

Being bitten by worm larvae which penetrate the skin.

Kittens can get them from nursing mother.

Sudden weight loss maybe the symptom of this infection.


Slender, thread like and less than half an inch. So, they are difficult to see.

They suck blood from the cats and produce an anticoagulant.

If they eat anything contaminated with hookworm larvae or eggs, they will get infected. Also can enter into the skin.


Pale gums

Black or bloody stools

General lethargy


45 – 75mm long

Generally, remain in the large intestine of the cats.

Can be caused by contaminated water. food or flesh.

Diarrhoea and weight loss


Inflammatory bowel syndrome.

Anaemia and bright red blood in stool in severe cases.


They cannot be seen with naked eye.

Heartworms generally invade the circulatory system.

This infection can spread from one cat to another cat or dog though mosquito bites.

 coughing and lack of appetite.


Difficulty in walking

Confirmatory test for worms:

This is a very hassle free procedure to do. The faeces of the cat should be collected from the litter box and send to the laboratory for test. Worm will be detected there and type of worm will also be confirmed. In general, the result comes in few days.

How to get rid of worms? De-wormers!!

Is your cat attacked by worms?? De-wormer is the perfect weapon for your little warrior!! Arndt said, It is usually available in three forms:

  1. Liquid oral medication
  2. Small pills or tablets
  3. Topical medicine to apply in the cat’s skin

Though it is always better to use the de-wormer recommended by the vet, but every pet parent should have some idea about them. At later part of the article we will dicuss about the dosageof the dewormed? Here are some recommendation:

How long does it take for a de-wormer to work?

Generally, de-wormers start to work efficiently within 24 hours. So, a time span of 24 hours to several days is usually needed to kill the adult worms. But it may be recommended by the vet to continue the medicine up to 2 weeks to ensure the eradication of the worms. Again, a second dose can be required between 3 – 4 weeks to kill those, who were larvae at the time of first dose and also the residual adult worms.

Is it enough to de-worm the cats once? Unfortunately not!

In case of kittens – From 6 weeks to 3 months:  Every 2 weeks (If first de-worming done at 6th week, the next will be at 8th week, then 10th and onwards)

Up to 6 months of age: Once monthly

In case of cats between 6 to 12 months age – Once every 3 months

In case of adult cats – Once every 3 to 6 months

Pregnant cats should also be de-wormed so that they don’t pass worms to their younger ones while nursing them.

Why kittens are frequently de-wormed?

The reasons behind this are:

  • They harbour most worms and produce larvae.
  • Kittens as well as their dams are most vulnerable to parasite infection in the abdomen.

Any chance of de-wormer overdose?

If we talk about pyrantel pamoate de-wormer, then there is a chance of overdose if given over a period of time. If you notice your little companion is showing any unusual symptoms, then don’t delay to contact with a vet or animal poison control centre.

Can de-worming be done at home?

Yes! If you are confident enough with the procedure, you can de-worm your cat at home. To de-worm at home you will need:

  • 1cc syringe
  • Digital scale
  • A bottle of oral de-wormer (better if you purchase pyrantel pamoate 50mg/ml suspension)

This should be administered according to the dosage information given ( also mentioned above in this article). One follows up dose should be given 2 weeks later regardless of the age of your cat.

De-worming can be done at home by de-wormers but for eradication for worms there is no home remedy. This should be strictly kept in mind that worms require medication. There is no way out!

Diet after de-worming

Cats suffer from lack of appetite after de-worming. What should you feed them then? They have a sensitive stomach after medication. Some recommended foods for sensitive stomach are given below:

If your cat is having a sensitive stomach, then she must be provided with food with are easily consumable and palatable. It’s better not to change the type of food she eats regularly. Whichever food she is habituated with, stick to it. Dry or wet or mixed, anyone she is comfortable with. But the taste can be changed to attract the cat.

What to expect after de-worming? - Side effects of de-worming!

Basically, de-wormers are chemicals, even though they are used for treatment. So, we should not expect that the cat will be able to digest it without showing any side effects. Then what should we expect? Is it natural for the cats to become sick after taking de-worming medicine? It is perfectly normal for a cat to get weary and nauseated after de-wormer ingestion. Be prepared instead of panicking!! If any cat is already having kidney problem, she is expected to suffer more relative to healthy cats. The pet parents should be mentally prepared about few abnormalities both in case of kittens and adult cats:


Usually, this may last for 2 – 3 days after medication. Worms will also be seen in the stool. Sometimes bloody stool is also normal. There is nothing to worry this. This is a very common phenomenon after administration of medicine for de-worming.

Sensitive stomach and vomiting:

Some cats can vomit after medication due to strong reaction of medicines with the parasites. It is necessary to consult a vet if the cat vomits within 1 hour of taking medicine. Excessive vomiting can cause dehydration which is a serious issue in case of cats. If the situation is worse she might need extra fluids and should be hospitalized.

Lack of appetite:

It’s usual to have lack of appetite for a few days after medication. But if it exceeds 3 – 4 days, a vet should be consulted.

Excessive salivation:

This is also a very common side effect of de-worming. Like other symptoms it is likely to last for 2 – 3 days. But if foam is seen to come out instead of saliva, vet should be consulted immediately.

Kittens may face some more serious problems:

  • Weakness, lethargic and lack of energy.
  • The kitten feels hot or cold to the touch.
  • White gum
  • Blood in the stool
  • Muscle tremors

 If any of these signs are seen it is compulsory to take her to the veterinary clinic. If they are not properly attended in time, then the kittens can die from the after effect of de-wormers. But not to take strain on this because they are occurring rarely.

Humans can be affected too!

If the pets are not de-wormed on time and the worm infestation increases beyond limit then it might start to affect the people living in that house too. Side effects of worm infestation are worse in humans than pets, specially in children. But that does not mean you can’t have a pet. You will just have to conscious about the hygiene of your pet and de-worm her regularly maintaining the schedule.

Can kittens get worms after being de-wormed?

Yes, in certain conditions further attack is possible:

Sometimes, even after the de-worming medication. Some unusual parasites like Gardia or Coccidia may attack your cat. In that case standard de-wormers do not work. So, if you notice worms in the stool of your cat in spite of medication consult your vet immediately.

Again, if you do not de-worm your cat according to proper schedule and skip the any dose including the follow up dose, then there is a chance of survival of some worms.

Further attack is also possible if hygiene of the cat is not properly maintained.

Prevention from further attack of worms:

If you take into consideration the following steps, your cat will be perfectly healthy and free from worms:

  • Parasite preventative medication should be taken according to the schedule.
  • To keep the indoor – Staying in the outdoor environment is a bit risky due to the presence of fleas or rodents carrying parasites. Also can step into faeces mistakenly and get attacked by worms. But is it okay to deprive the cat from fresh air and natural environment? If she wants to go outside, you should keep a close eye on her and prevent her from going to filthy areas.
  • Personal hygiene should be maintained – Cat’s litter box should be cleaned on a regular basis. To wipe the litter box paper towels and natural anti-bacterial spray should be used.

Review and Dosage of Top 7 Dewormer:

Bayer Expert Care Tapeworm Dewormer for Cats – Red alert for the tapeworms!!


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It has 3 tablets each containing 23mg praziquantel.

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  • It can be taken by mouth or mixed with food.
  • Easy and inexpensive removal of tapeworms.
  • It can be used at any age starting from 6 weeks of age.

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  • May cause - Diarrhoea and Drooling


Bayer Drontal Broad Spectrum DewormerMost Effective Dewormer


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Available in tablet form where each tablet contains:

  • 18.2mg praziquantel
  • 72.6 pyrantel base as pyrantel pamoate



No. of tablets

2-3 lbs

 1/2-(half Tablet)

4-8 lbs 

 1 -( OneTablet)

9-12 lbs

1.5- (One and half Tablet)

13-16 lbs

2-(Two Tablet)

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  • If the type of worm is uncertain, then this de-wormer can be used without any confusion. This is highly effective for all types of worms.
  • Very minimum side effects.

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  • Some cats may not like this as the taste is unpleasant.


Excel Liquid Roundworm De-wormer for Cats – Best Budget Dewormer


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  • Piperazine Citrate as active ingredient.
  • Inactive: Caramel colour, Glycerin, Flavour, sugar, water, Potassium Sorbate

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  • Very tasty! Cats will easily take this with food.
  • Works with excellent efficiency against large roundworms.

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  • It is made up of vanilla taste. Some cats may not like it.


NaturPet D Wormer - Herbal Dewormer


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  • Wormwood and Black Walnut Hull;
  • Black Cumin and Sage;
  • Fennel Seed and Papaya Leaf.

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  • Heals the lining of the digestive tract.
  • It can be directly administered with food.
  • Works as a natural alternative to chemical de-wormers.

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  • It can only be used in case of adult pets.
  • Ineffective against hookworms.


Vet Recommended Ringworm Solution for Cats - Best for RingWorm


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  • Phosphoric Acid, Hydrochloric Acid, Citric Acid
  • Distilled water

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  • This is made by safe, harmless, biodegradable, water-soluble chemistry formulation.
  • Has a very low PH of around 1.
  • It is safe for cat’s skin.
  • Available at a low cost and its effect lasts for 2 months.

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  • It should use only for adult cat


Durvet WormEze Liquid Canine & Feline Anthelmintic-Easy To Feed


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Piperazine citrate 275mg/tea spoon(5 ml)

  1. Water, sucrose, caramel;
  2. Sodium Saccharin, Citric Acid;
  3. Methylparaben, Propylparaden;
  4. Artificial Flavour.

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  • It is easy to use as it can be directly added with their food.
  • Inexpensive.
  • Good taste and palatable.
  • Eligible for kittens over 6 weeks of age.

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  • Sometimes though rare, People complain that it tastes good but not work well.


PETARMOR 12 Count Warm-Away Caps Cats. - Average


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  • Piperazine (active)
  • Magnesium stearate (inactive)



No. of capsule

1 – 5


5.1 – 10


10.1 – 15


15.1 – 20


20.1 – 25


Over 25


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  • It can be given to all ages of cats.
  • Effective against large roundworms.
  • It can be easily administered with food.
  • Recommended by the vets.
  • Affordable by most people.

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  • It can cause negative side effects due to overdose.


Final Thought About Cat Deworming: What to Expect After Deworming a Cat

We love our cat and care for her health

Being a cat lover, I completely agree with the statement. In fact, we all do. They also love us unconditionally. When it comes to caring for our pets we should take the high consideration. In between our busy schedule, making time for their proper care is a must. Feeding them best food, giving them highest possible comfort and maintaining their proper health & hygiene should be our priority. This is what can make us best pet parents.

De-worming is one of the most important procedure to keep your cat healthy and disease free. I hope this article will helpful for cat lovers. So do not worry just follow the steps and do not hesitate to consult a Vet for critical situation.

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