Comfortis Flea Control

  • Rapidly kills fleas.
  • For the treatment, prevention and control of flea infestations.
  • For the control of flea allergy dermatitis.
  • Monthly administration. Given with meals.

From $69.95



Style Number: COM-FLE-00001-CONFIG

Product Detail: Comfortis Flea Control

Comfortis Chewable Tablets For Dogs and Cats

Comfortis is a once a month oral medication which rapidly kills fleas on dogs and cats. Studies have shown that Comfortis begins to kill fleas within 30 minutes of dosing and is 100% effective within 4 hours.

Comfortis can be used on wet dogs/cats and bathing, swimming and getting wet does not diminish the product's effectiveness.

Comfortis can be used in dogs/cats over 14 weeks of age.

Owners should seek veterinary advice regarding use in pregnant or lactating animals and for use in dogs/cats with pre-existing epilepsy. Safety has not been established in breeding males.

Comfortis can be safely used with topical tick treatments and collars, gastrointestinal worm treatments and heartworm treatments used in accordance to the manufacturer's dosing recommendations.

How to use the product

Comfortis is given orally once per month and the dose is bodyweight dependant.

Comfortis is presented as a chewable tablet so many animals will eat the tablet off the owner's hand. In those animals which refuse to do this normal oral dosing procedure is recommended with the tablet being placed at the back of the oral cavity, the mouth closed and the throat stroked to encourage swallowing.

Comfortis should be given at the time of feeding (with food) for maximal effectiveness.

It is recommended that all animals in the household be treated with an effective flea treatment for maximal flea control to be achieved.


Comfortis is available in 5 different sizes.

Tips and tricks

As dosing is once per month, it is useful to mark the due date on the calendar. Many owners find the 1st of the month a suitable date to choose as it is easy to remember.

Active ingredients

Comfortis contains the active ingredient Spinosad. Spinosad works by causing nerve excitation within the insect's nervous system, leading to muscle contractions, paralysis and death of the target pests.

Contraindications and warnings

There are no known contraindications for Comfortis.

However, veterinary advice should be sought before using in breeding or lactating animals or in animals with pre-existing epilepsy.

Side effects can include, but may not be limited to vomiting, depression/lethargy, anorexia, ataxia, diarrhoea, pruritis (itchy skin), trembling, hypersalivation and seizures. If vomiting occurs within 1 hour of administration, give another full dose.

If a monthly dose is missed, Comfortis should be restarted immediately and the monthly dosing schedule continued from that date.

It's Nice To Know You'll Save More On
Comfortis Flea Control At Trixan Pet Supplies
Item PETstock Petbarn Vet Products Direct Trixan Pet Supplies Savings
Comfortis Chewable Tablets 560mg (Green 20.1-40lbs) 6 Pack $0.00 $91.23 $70.97 $69.95 $21.28
Comfortis Chewable Tablets 810mg (Blue 40.1-60lbs) 12 Pack N/A N/A $131.48 $130.95 $0.53
Comfortis Chewable Tablets 1620mg (Brown 60.1-120lbs) 6 Pack $0.00 $98.00 $76.38 $75.95 $22.05
Comfortis Chewable Tablets 140mg (Pink 5-10lbs) 6 Pack $0.00 $83.49 $64.20 $63.95 $19.54
Comfortis Chewable Tablets 810mg (Blue 40.1-60lbs) 6 Pack $0.00 $94.63 $73.59 $72.95 $21.68
Prices correct as at 1st of each month. Comparison based on prices published online. Comparison excludes cost of shipping, promotions or coupons. Prices subject to change without notice.

Ratings & Reviews

Based on 88 Review(s)

Average Rating


Ratings Overview











Most Recent Reviews
Written by sharon
Oct 07, 2016

My dog had major itching problems but after trying comfortis for a few months he is itch free . He is a happier dog as he is not scratching all the time.

Comfortis Releif
Written by Tammy
Jun 21, 2015

Sick of fleas and spending hundreds of dollars on products that don't work, try Comfortis, your dogs life will change in a day. Unbelievable but true after years of different flea products and yard treatments i tried this product and the fleas went away. Happy dogs happy life. I have now been using this product for over a year and is still working as good as the first use.

Comfortis Chewable tablets
Written by Deb
Mar 22, 2015

Best flea control on the mark it's quick easy to administer there is no messy liquid to apply to the dog's coat no worrying if it will rain & wash off!

Comfortis Flea Control
Written by Patch
Aug 20, 2014

I am extremely grateful that Trixan provides the Comfortis Flea Control range as it is affordable and convenient.

Comfortis Flea Control
Written by Deb Baidwin
Aug 19, 2014

An exceptional product that really does work on fleas, easy to use as its a just a tablet once a month. My dog takes it no problem if I smother it with a product bought in the deli section at the supermarket.....liverwurst. Price is reasonable as well.....especially from Trixan pet supplies, and is delivered to my door. Couldnt ask for better....thankyou TRixan

Comfortis does work!
Written by Jenny
Aug 19, 2014

The most effective product that I have used for flea control. As it does not allow the flea to bite first before working there is no skin itch/ irritation which my dog does suffer from.

Big tick for Comfortis
Written by Dione White
Aug 19, 2014

I like comfortis for my sharpie X because it is the only product that works for him. It not only keeps away the fleas but it helps reduce his flea eczema. I have recommended it to all my friends that have pets.

easy and it works
Written by Lisa
Aug 19, 2014

I had always used Frontline on my dog and found it worked well. but just in the last 6 months I had noticed the odd flea - which I did not want as she is an inside dog and sleeps in my sons bed. My vet recommended comfortis. I love it. It works and it is so easy. I also love that you don't have the wet patch on the dogs neck to worry about the kids touching. And even better - not a single flea in sight.

You can't get any better!
Written by Bigredvic
Aug 19, 2014

No more worries about how long you have to wait until your dog gets wet. There is nothing worse than having to restrict your dog's freedom so that you have not wasted the flea control you have put on the back of their neck. Let your dog run free with this no worry product!

Comfortis success
Written by David Smith
Jun 09, 2014

We had tried other flea treatments with varying degrees of success. Having now used Comfortis for 6 months, the flea problem has been eliminated