Visit Your Veterinarian for a Comfortis Prescription

Comfortis® (spinosad) requires a prescription from your veterinarian, who is your best source of advice about your pet’s health care. Talk to your veterinarian about how Comfortis can provide your dog or cat with fast, effective and convenient flea treatment.

How to purchase Comfortis:


Make an appointment to bring your dog or cat into your veterinary clinic.


Ask your veterinarian about Comfortis for your dog or cat.


Once prescribed by your veterinarian, purchase your 12-month, 6-month, or 3-month supply of Comfortis.