Questions? Call 877-813-7387 Mon-Fri 8am - 5pm CT
Click for details
close ×

Save 5% With Autoship

Autoship is an easy way for items to be automatically delivered on a regular schedule. Autoship is easily managed online and can be canceled at anytime. Simply choose how often you want to receive your items, and it will be automatically delivered to your doorstep. A 5% discount is applied to all autoship orders. Shipping is included on orders over $69.
An email reminder is sent 3 days before the autoship is scheduled for shipment. Order frequency, next order date and/or quantity can be changed in the 'autoship' section in your account. Changes to orders may be made anytime within 24 hours of the next scheduled order date.

See all Autoship details »

Comfortis Rx for Dogs

Comfortis Rx for Dogs
Comfortis Rx for Dogs
Part Number:8033|


  • Kills fleas and prevents egg laying in 30 minutes
  • Protection lasts a full 30 days
  • Comes in a convenient chewable, beef-flavored tablet
  • Spinosad, the active ingredient in Comfortis, is environmentally friendly

Your Price: $18.17
In Stock

Choose Options

Size / Color / Supply / Weight / Count
10.1-20 lb Dogs/6.1-12 lb Cats / Single tab
20.1-40 lb Dogs/12.1-24 lb Cats / Green / 6 Count
20.1-40 lb Dogs/12.1-24 Cats / Single Tab
40.1-60 lb Dogs / Blue / 6 Count
40.1-60 lbs / Single Tab
5-10 lb Dogs/4.1-6 lb Cats / Pink / 6 Count
5-10 lb Dogs/4.1-6 lb Cats / Single Tab
60.1-120 lb Dogs / Brown / 6 Count
60.1-120 lbs / Single Tab

Save 5% and have this product automatically shipped to you!

Free Shipping


Comfortis is a new and unique way to defend your cat or dog against fleas. Protection comes in the form of an easy-to-give, beef-flavored tablet that starts killing fleas within 30 minutes and keeps them from laying eggs. Your pet is safeguarded for a full 30 days. Unlike topical flea treatments, Comfortis isn't messy. It won't leave a staining residue on your pet's fur, and there's no isolation period for your pet while the spot-on fluid dries, so you can play with your pet immediately after administration.

How it works:

Spinosad kills fleas by causing excitation of the insect's nervous system, leading to paralysis and rapid death.

Comfortis is safe for dogs 3.3 pounds or more; cats 2 pounds or more; and puppies and kittens 14 weeks or older. Comfortis for Dogs & Cats requires a prescription from your veterinarian.

All prescription items are Non-Refundable and Non-Returnable.

Have questions about your prescription? Contact our pharmacist toll free at (877) 813-7387.