Best Cat Dewormers 2021: Effective, Affordable & Safe Meds For Your Pet

Criteria For Picking Up The Top Cat Dewormers

Nowadays, there are plenty of OTC and prescribed dewormers sold in pet shops and online, so it’s easy to get lost in this diversity. To choose the best cat dewormer options available in the market we relied on several basic criteria. In particular, we estimated the following characteristics of every med:


This is the main criteria, and to find out information about the effectiveness of a certain veterinary drug we’ve studied a lot of cat dewormer reviews written by real customers and by specialists. All the top rated cat dewormer products are highly effective.

Side effects

Some dewormers while being effective cause serious side effects. Though to some extent it can be an idiosyncrasy of a certain dewormer, in many cases different pets suffer from one and the same side effects. We picked out the best-tolerated products.


Cat dewormers are available in various dosage forms – as topical formulations and oral preparations. Oral meds, in turn, can be produced in the form of pills, tabs, paste, gels or liquids. If a pill is too big, it can be difficult to make a cat swallow it. That is why making our ranking, we tried to take the convenience of use into consideration.

The result of our comprehensive analysis is a list of six top cat dewormer products. All of them are effective, relatively well-tolerated and safe. An important aspect is that all the meds are available over the counter.

Top-Choice Cat Dewormers: a Comparative Chart

 BrandBayer Tapeworm DewormerExcel Roundworm Liquid Cat De-WormerPro-Sense Liquid Dewormer SolutionPyrantel Pamoate SuspensionNaturpet D WormerHomeoPet Wrm Clear
Active ingredient(s)PraziquantelPiperazine CitratePiperazine CitratePyrantel PamoateWormwood, black walnut, sage leaf, black and fennel seeds, papaya leaves.A mixture of plant-based ingredients
Dosage formTabletsLiquidLiquidLiquidLiquidLiquid
Effective againstTapewormsRoundwormsRoundwormsPinworms, roundworms, hookwormsAll types of wormsTapeworms, roundworms, hookworms, and pinworms
Dosing0.5-1.5 tab as a one-time dose½-1 tsp as a one-time dose + re-administration in 14 days½-1 tsp as a one-time dose + re-administration in 14 days1 ml per 5 pounds as a one-time doseA dose is calculated depending on the cat’s weight10 drops, 3 times a day, 14 days
Side effectsSalivation and diarrheaNausea, vomitingNausea, vomitingNo serious side effectsNo serious side effectsNo serious side effects
Palatability & convenienceMediumHighHighHighHighMedium
Suits for pregnant & lactating catsNoNoNoNoYesYes

Bayer Tapeworm Dewormer

Bayer supplies one of the best cat tapeworm dewormer products in the market. They are available in the form of non-coated tabs that can be chewed, crushed and mixed with food. The active ingredient here is praziquantel that is effective against one type of worms – tapeworms. However, it causes fewer side effects than broad-spectrum meds.

Pros: It is safe and effective for cats of any age (above 6 weeks), and causes only minor side effects. Tabs are easily crushed and mixed up with food.

Cons: Some cats refuse to eat tabs even with food. Bigger cats need more than one tab at a time, which can be a problem, as they don’t want to administer it.

Excel Roundworm Liquid Cat De-Wormer, 4-Ounce

The liquid Excel roundworm cat dewormer is a very affordable and easy-to-administer product. Its active component is piperazin citrate, which is effective against roundworms only. A one-time dose doesn’t exceed 1 teaspoonful, and it is relatively easy to make a cat swallow it, as the med has a subtle vanilla scent and a pleasant taste.

Pros: It is extremely affordable and causes few side effects. Thanks to its pleasant taste most cats don’t mind swallowing it. And even if they do, it’s easier to make them swallow a liquid than a hard tab.

Cons: It is effective against only one type of worms, and it must be taken on a regular basis once a month.

Pro-Sense Liquid Dewormer Solutions For Cats, 4-fl. oz

An easy and convenient way to help your kitty get rid of roundworms is giving the Pro-Sense liquid cat dewormer to it. Its active component is piperazine citrate, which effectively ousts worms of your cat’s organism. The solution has a pleasant scent and tastes well, so most cats do not revolt of its administration.

Pros: It is effective, safe and easy to use. Most cats tolerate it well and don’t mind taking it.

Cons: It can cause side effects like nausea and vomiting and requires frequent re-administration.

Pyrantel Pamoate Suspension 50 mg 32 oz bottle by Generic

This suspension with a subtle vanilla scent and a neutral taste can be used for the deworming of animals – from cats to horses. It kills and ousts several types of worms, including pinworms (primarily), some roundworms and hookworms. The med is supplied in large 32-oz bottles.

Pros: It is effective, safe and much more affordable than its branded analogues. The bottle is really large. The drug can be added to drinking water.

Cons: Needs regular re-administration. As the bottle is big, it is not for one-time dosing, and you always have to look at its expiry date.

Naturpet D Wormer | 100% Natural, Safe, & Effective Dewormer for Dogs and Cats 

If you are looking for a natural cat dewormer, Naturpet is the best option. It doesn’t contain synthetically produced components. Instead, its active ingredients are a mixture of herbs, which has been used in the traditional medicine for centuries. Not only does Naturpet kill worms, but also has a mild healing effect on the entire digestive tract.

Pros: 100% natural composition, safety, and minimal side effects make this product a top choice for many cat owners. It is effective against a variety of worms and suits for small kittens and pregnant cats.

Cons: Its effectiveness against some worms is a bit lower than the effectiveness of chemical drugs, and it seems to be pricey.

HomeoPet Wrm Clear

HomeoPet is a liquid homeopathic cat dewormer for all worms. It is dropped in the food or drinking water, which is quite convenient, as you don’t have to force your feline to swallow it. HomeoPet causes virtually no side effects and suits for all cats, including kittens and pregnant she-cats.

Pros: It is easy to use, safe and non-toxic. You can give it to all your cats without the fear of side effects. Also, it is a broad-spectrum remedy that helps to expel four different types of worms.

Cons: It must be taken thrice a day, 14 days in a row, which is a sort of tiresome.

Verdict And Recommendations

We’ve reviewed 6 popular OTC cat dewormers. It’s hard to recommend a particular med, as their intended use is different. If what you need is a tapeworm dewormer, consider Bayer’s product – safe, effective, and with minimal side effects. For fighting roundworms, try the Pro-Sense cat dewormer, which is easy to administer due to its liquid formula. And Naturpet D Wormer is an effective 100% natural broad-spectrum remedy, which doesn’t cause harm and has a healing effect on the digestive tract.

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