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Vectra Feline

Prescription Required
From $59.29

Eligible for free e-certification with purchase
9 lbs and up

Select your product options above to view the stock and delivery information.

under 9 lbs

Select your product options above to view the stock and delivery information.


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All medications are filled by VetSource Pharmacy. More information. Can only be shipped to the 50 US states.

Product Summary:

Vectra Feline
Vectra Feline provides effective monthly control of adult fleas, flea eggs, flea larvae and pupae.
Vectra is colorless, odor-free, non-greasy and quick-drying topical that kills adult fleas within six hours, kills fleas that may transmit disease, including bartonellosis, tapeworm and tularemia, controls the development of all flea stages: eggs, larvae and pupae for at least one month.  The unique, patented applicator features an elongated tip that makes it easy to apply to a feline’s skin through the haircoat. The rounded tip minimizes risk of skin abrasions.
For use:
Cats at least 6 weeks old
Small (Taupe) for cats under 9lbs
Large (Green) for cats 9+ lbs
Active ingredient(s):
dinotefuran & pyriproxyfen
Make sure to tell your veterinarian what other medication you are giving to your pet. Quite often your veterinarian may prescribe two different medications, even if a drug interaction may occur. In
this case, your veterinarian may vary the dose and/or monitor your pet more closely. There are no known drug interactions with this product, however, certain medications may interact with
insecticides. Contact your veterinarian if your pet experiences any unusual reactions when different medications are given together. Be sure to inform VetSource and your veterinarian if your pet has any known drug sensitivities or allergies. If your pet displays symptoms of an allergic reaction, call your veterinarian immediately or go to a veterinary emergency clinic. Symptoms may include but are not limited to: swollen lips, tongue, face, airways; difficulty breathing; agitation; profuse salivation; vomiting; widespread hives and itching.
Side effects:
A temporary irritation may develop at the site of administration. Call your vet if symptoms are bother some to your pet. Your pet may continue to show signs of itching for a few days after the product has been applied, even though flea activity has been stopped. If itching persists or appears to be troublesome to your pet, contact your veterinarian. If you notice anything unusual, contact your veterinarian.
Vectra should be applied topically as directed by your veterinarian.
Please note:

We are not a licensed pharmacy.


This prescription product or therapeutic food is fulfilled by VetSource, a licensed pharmacy in all 50 US states.  VetSource only ships to the 50 US states. 


To order prescription products or therapeutic foods  from VetSource you must have an existing, valid veterinarian-client-patient relationship.  Prescription requests are subject to a Drug Utilization Review by a licensed pharmacist at VetSource for patient safety.


All prescription products (excluding therapeutic food) are FDA approved, or EPA licensed, to be sold in the US.


Prescription products cannot be returned. 



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