The Best Flea Tablets For Cats? And How Often To Give To Your Cat?

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The best flea tablets for cats are fast acting and reliable.  How do you know which ones work the best?  By the time you have finished this article you will know which flea tablet to choose for your cat and how often to give a tablet.

What Is The Advantage Of Cat Flea Tablets?

A flea tablet or pill is normally (but not always) a one off treatment.

Cat flea tablets effectively treat a flea infestation and work quickly. This is an option that is commonly used in shelters. They have to get rid of fleas fast.

How Often Does A cat Have A Flea tablet?

A pill can be given as a once off or as required AND there is one brand that has 30 days coverage.

Some of the tablets referred to below contain a product called nitenpyram. There is more information about nitenpyram and how it works here.

Cat Flea Tablets

1. Capstar Flea Tablets – Daily Treatment or as Required – Prescription not needed. 
2. Flea Away Natural Flea Repellent – Daily Treatment or as Required – Prescription not needed.  
3. Comfortis Tablets For Cats And DogsLasts 30 days – Prescription needed. 
4. Cap Action Oral Flea Treatment For Cats –  Daily Treatment or as Required – Prescription not needed.  
How To Get The Cat To Take A Cat Flea Tablet?
FAQ- Cat Flea Pills

1. Capstar Flea Tablets

an example of a tablets for cat fleas

The dosage of Capstar flea tablets is, one tablet daily for cats.

This flea tablet is a very fast acting treatment. The flea treatment starts working within 30 minutes and will kill 90% of fleas on your cat within 6 hours of treatment.

When you just need those fleas gone these flea pills are very effective.

It is a one off treatment that can be used as often as needed.  It is safe to use once per day, with or without food. It is often used in shelters to combat flea infestations.

Be aware that this is not a treatment that lasts for 30 days.  You can repeat the cat flea tablet as necessary, or you may choose to use this product in conjunction with other flea medicine.

There are 6 tables in this pack of flea tablets, suitable for cats from 2 lbs to 25 lbs.

For best results treat all infected cats and dogs in your household with flea tablets, so that re infestation doesn’t take place. There are different tablets for cats and dogs.

This cat flea medication is in the form of a tablet.  Either crush the tablet and add to your cat’s food in a pill pocket or use a pill popper.

Here are some detailed instructions, explaining how to give your cat a tablet using a pill popper.

Cats can be finicky about taking tablets and will often not eat food that contains crushed up medication.  

We made cat cookies for our medication refusal cat. The cat tablets crushed with his favourite treat biccies, made into cookies and baked – I’m not joking.

It takes some creative thinking.


Cat flea tablets are very efficient when used on a daily basis.

Cat flea tablets are often used by shelters for flea infestations.


This is a daily flea treatment or as needed. It is not a monthly treatment.

Costly if you have multiple cats.

Specifications Of Capstar Flea Tablets

Capstar flea tablets kills adult fleas.

Capstar is available in a pack with 6 tablets or in a bundle of 2 packs.

The active ingredient is – Nitenpyram 11.4mg.

Capstar is available without a prescription. Check the expiry on the packet.

There are different doses for cats and dogs.

Capstar may also be used with flea shampoos, heartworm preventives, antibiotics, vaccines and de-worming medications.

Oral Flea Treatment for Cats,

Can kittens have flea tablets? This article explains the best treatments for kittens, how old the kittens need to be and the doses of the medication required. It also includes pros and cons so that you can decide what will best suit your situation.

2. Flea Away Natural Flea Repellent

Flea away chewable cat flea tablets

The dosage for this cat flea tablet is, one tablet daily for cats.

Flea Away is a natural option cat flea tablet. The flea tablet is a vitamin complex, made to FDA human standards.

The specific ingredients of the flea tablet are listed below in the Specifications. The product is is essentially water soluble vitamins.

How does this cat flea tablet work? Using the vitamin complex it masks the smell of Co2 which is what attracts the fleas to bite. Even if you do see a flea it won’t bite. Check your cat’s tummy for the most obvious place to see fleas.

It will take approximately 30 days for your cat to build up resistance to fleas.

In the meantime you may want to give your cat a shampoo to get rid of fleas or use a different natural option of flea control, for example, using diatomaceous earth on the cat and around the home.

The tablet is quite large I would definitely suggest reading this article about how to use a pill popper.


Flea Away is made in the USA and is a natural option.

Good value because there are 100 tablets in the container.

The flea tablets can be crushed and given with food.


This cat flea treatment is not a quick fix, it takes at least 30 days to see results. In the meantime you will still need to be treating areas of your home where fleas may be present.

The flea tablets are large for a cat.

Specifications Of Natural Flea Repellent

Active Ingredients : Proprietary blend of (Brewers Yeast, Calcium Carbonate, Cyanocobalamin, Folic Acid, Niacin, Pyridoxine HCI, Thiamine HCI, dl-alpha-tocopherylacetate). Inactive Ingredients : Beef Liver, Gelatin, Gelatin Hydrolysate Beef, Magnesium Stearate, Microcrystalline Cellulose, Silica, Stearic Acid.

There are 100 cat flea tablets in the bottle.

3. Comfortis Chewable Flea Tablets For Cats and Dogs

cat pill for cats to get rid of fleas
Note: Different tablets for different weight cats

The dosage of Comfortis chewable flea tablets, is one tablet which lasts for 30 days

Four essential things to know about Comfortis.

1. Comfortis is prescription only

2. Comfortis is chew-able

3. Comfortis is a once per month treatment

4. Cats must be 14 weeks or older to use Comfortis.

If you select “I want Chewy to contact my veterinarian” when placing your order, Chewy will contact your veterinarian on your behalf to get approval for your pet’s prescription.

Comfortis is a prescription medication. You do not need to have the prescription before placing an order.

Note that there are different doses of Comfortis flea medication for different size cats, so make sure that you have the correct tablet for the weight of your cat.

The active ingredient in Comfortis flea tablets is Spinosad. If you suspect that your cat is pregnant please consult your vet before using this medication.

Efficiency wise, Comfortis chewable flea tablets, have an outstanding reputation with fleas being killed within 30 minutes and 98% of fleas killed on cats in a four hour period.  This was in a controlled situation.

Comfortis flea treatment works by killing fleas before they lay eggs. If you see fleas on your cat within the monthly time frame that Comfortis gives for protection they will most likely be new fleas.  

Continued use of Comfortis medication ensures that new infestations will be prevented.


Comfortis works well to control fleas, even out in the country.

An easy to administer flea medication, only once per month

The treatment works quickly and it can’t wash off.


Comfortis requires a vet prescription – Chewy will contact your vet. A con in this case can turn into a pro. It depends whether getting script is a hassle for you.

Specifications Of Chewable Flea Tablets For Cats

There are different Comfortis products for different weight animals.

This product is for cats weighing 4.1 – 6 pounds – the Pink Box.

There is also this product for cats weighing 6.1 -12 pounds – the Orange Box. There is also this product for cats weighing 12.1 – 24 pounds – the Green Box.

Click on this link for more information regarding pets with allergies, side effects, how to administer and dosage

This is another option that lasts for 30 days. Cat flea drops that are applied once per month. 

4. CAPACTION Oral Flea Treatment For Cats

flea tablet once per day

The dosage of CAPACTION is one tablet daily for cats or as required to achieve flea control.

It takes around 30 minutes for CAPACTION flea tablets to start working and in 6 hours, it will have achieved 90% flea control.

CAPACTION a one dose, tablet treatment but it can be given daily if required.

The recommendations are that the CAPACTION pill is given as a whole tablet orally or placed in food.

If placed in food you will need to ensure that the cat actually eats the pill. Hmm! Amazing how cats can eat everything and leave the pill behind in their food dish.

If you get used to using a pill shooter it is a quick and the most efficient to give the cat a pill.

The actual dose of CAPACTION lasts for 24 hours and it will clear fleas quickly.  Then you can decide if you want to use a different treatment going forward or stick with the daily dose.  

As there are 6 tablets in the CAPACTION pack it does make sense to use the pack.

Read the information on the insert that describes certain reaction that cats and kittens may have and what course of action to take.

It is also possible to talk to a vet at Chewy, so if you have any questions this is a great solution.

Pair this product with a carpet powder to get rid of fleas to have a better chance of continued success.


No Prescription needed for CAPACTION flea tablets

CAPACTION can be used on cats 4 weeks old and weighing over 2 pounds

This treatment does not wash off


It can be difficult to give the cat a pill – don’t we know it. it can be overcome. Using a pill popper is the most efficient way once you are used to it.

Specifications Of CAPACTION Flea Tablet For Cats

CAPACTION cat flea pills contain – Nitenpyram 11.4 mgn. There are 6 pills in this pack. It is suitable or cats over 4 weeks or weighing over 2 pounds.

Why We Choose Capstar Flea Tablets For Cats

Capstar flea tablets are top notch when you need to get rid of fleas fast.  This is exactly what they are designed to do and they deliver.  They are frequently used in shelters to contain flea infestations.

Capstar flea tablets don’t last 30 days, but can be given to the cat daily for ongoing protection or until the flea infestation is controlled.

Capstar flea tablets starts working within 30 minutes and will kill 90% of fleas on your cat within 6 hours of treatment.

A flea collar for your cat can last up to 8 months. If  there is an ongoing flea problem or you just want to set and pretty well forget,  this could be a good option in your household.

How To Get The Cat To Take A Cat Flea Tablet?

Some cats, will eat a pill that has been crushed and added to their food. Yay for all those kitties. However, many cats don’t tolerate this sort of behavior from us and will leave the food untouched. Not naming names here but kitty, you know who you are!

It can be frustrating as we know we are doing what is best for kitty but kitty has other ideas and being obedient isn’t one of them. Fortunately there are other ways of giving the cat a tablet.

  1. Using a pill popper or pill shooter is a popular and convenient way to give a cat a tablet.  It may take some getting used to, however it is 100% worth persisting.

    Life will become easier when ever kitty needs to take a pill. There is detailed information here about how to use a pill popper.

  2. Another excellent option is to use a gel capsule. The capsules are purchased empty and the pill is then be added to the capsule, whole or crushed.

    Approximately 200 capsules are in the bottle. This is in preference to purchasing 1000 gel caps (way too many) in a plastic bag.

    This person describes how they used these gel caps successfully with their cat.

    The capsules are also very small, just the right size for cat.  Next the capsule can be put into the pill popper or added to a wrapper also called a pill pocket.

What is diatomaceous earth and do you know use it to control fleas? DE is an excellent choice if you have a yard or outdoor area that also needs to be treated for fleas.

Pinterest image - The Best Flea tablets For Cats

FAQ Cat Flea Tablets

How long do cat flea tablets last?

Pills containing nitenpyram (Capstar) start to work almost immediately, within 30 minutes.
The nitenpyram leaves the cat’s body in approximately 24 hours and with that the protection from fleas also disappears. It is recommended to give the tablet regularly for ongoing relief from fleas.

Pills containing Spinosad (Comfortis) also start to work quickly and kill fleas for approximately one month. Be sure to read the label and the instructions for administering before purchase.

Are There Side Effects From Cat Flea Tablets?

Side effects can include hyperactivity or lethargy, excessive panting, itching, vomiting, nervousness, diarrhoea, seizures, and trembling.

Other side effects that cats may exhibit include pupil dilation, increased heart rate, vocalization, fever, and salivation.

Both cats and dogs may also experience an allergic reaction to the treatment that is characterized by hives, difficulty breathing, and swelling of the lips or tongue.

There is more information from about Capstar here and Comfortis here.

Can I Give My Pregnant Cat Flea Tablets?

Pregnant cats can be given medication that contains Nitenpyram.

Comfortis contains a different medication called Spinosad.  Consult with your vet before giving Comfortis to a pregnant cat.

vector - two cats reading
I think I prefer a 30 day option dear.

The Best Flea Tablets For Cats

 Fast-Acting Oral Flea Treatment for Cats

Capstar Flea Tablets For Cats

Often used by shelters for flea infestations.

Starts killing fleas within 30 minutes of administration.

If your pet gets re-infested with fleas, you can safely give another dose as often as once per day.

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