How to reach us

A calm dog is rewarded with her favorite toy.

General inquiries

For information about Comfortis® chewable tablets, contact us by phone at 1-888-545-5973.

Media contacts

If you are a member of the media seeking more information, please contact:

Joan S. Todd
Global Media Relations and Communications
Elanco/Elanco Companion Animal Health
jstodd@lilly.com
317-277-7464 (office)

Important Safety Information

  • 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.
  • 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.
  • Click here for full product label including complete safety information.
A women feeds a treat to her dog.