Skip to content

Save 20% on your first AutoShip with promo code FAMILY20!Learn More

Comfortis Chewable Tablet

by Elanco

This item requires prescription approval.

Prescription medications are currently limited to CA residents. More states coming soon!!

Original price $116.68 - Original price $129.96
Original price
$116.68 - $129.96
Current price $116.68
Size: Dogs 5-10lbs / Cats 4.1-6lbs

When it comes to eliminating fleas on your dog, you want a flea medicine you can trust. Treat your pet’s flea infestation with Comfortis, the #1 recommended prescription flea-only medication. Comfortis is the FDA-approved chewable, beef-flavored tablet that kills fleas and prevents flea infestations for a full month.

  • Starts killing fleas in just 30 minutes
  • Easy to gove and mess free
  • Provides a full month of protection
  • Killed 100% of fleas on dogs in just four hours in controlled laboratory studies

Consult with your veterinarian for proper dosage and course of treatment.


Serious adverse reactions have been reported following concomitant extra-label use of ivermectin with COMFORTIS


Use with caution in breeding females. Use with caution in dogs with pre-existing epilepsy. The safe use of COMFORTIS in breeding males has not been evaluated.

Food and Drug Interactions

Following concomitant extra-label use of ivermectin with Comfortis, some dogs have experienced the following clinical signs: trembling/twitching, salivation/drooling, seizures, incoordination, excessive dilation of pupils, blindness and disorientation. Post-approval experience continues to support the safety of Comfortis when used concurrently with heartworm preventatives according to label directions.

Human Warnings

Not for human use. Keep this and all drugs out of the reach of children.

Possible Side Effects

The most common adverse reaction reported is vomiting. Other adverse reactions reported in decreasing order of frequency are: depression/lethargy, decreased appetite, incoordination, diarrhea, itching, trembling, excessive salivation and seizures.

Contact your veterinarian if you believe your pet is experiencing side effects.

Product Administration


Product Form

Chewable tablet




Store at 20-25°C (68 -77°F), excursions permitted between 15 to 30°C (59 to 86°F).



Prescribing Info/Brochures