Vectra 3D for Dogs and Puppies 21-55 lbs, 3 Doses | On Sale | EntirelyPets Rx
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Vectra 3D for Dogs and Puppies 21-55 lbs, 3 Doses

Item# VD100203
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  • Description
  • Ingredients
  • Directions
  • FAQ
  • Reviews


Vectra 3D for Dogs 21-55 lbs protects your dog against parasites and pathogens.Vectra 3D uses a three-pronged approach to keep your dog safe from disease-carrying agents by utilizing Dinotefuran, Permethrin and Pyriproxyfen.

The Dinotefuran is an insecticide that functions by causing continuous stimulation of the nervous system of insects upon first contact. This stimulation leads to tremors and quick deaths in insects as they land on your dog. Permethrin is an adulticide and works to repel vectors, such as mosquitoes, ticks and sand flies by causing them to lose control of their nervous system. Lastly, Pyripoxyfen, an insect growth regulator, works to prevent development of fleas in their early stages. This keeps them as eggs, larvae, and pupae until the other active ingredients functionally decimate them.

Vectra 3D has been clinically shown to provide fast-acting protection against multiple pests lasting up to one month. In addition to repelling mosquitoes, ticks, and sand flies, Vectra 3D repels and kills fleas, lice, and mites quickly and effectively. In fact, it has been shown to reduce the number of ticks in only 24-hours and begins killing fleas within the first two hours of use.

Vectra 3D remains effective after bathing and it can be used on dogs and puppies older than 7 weeks. Vectra 3D comes in 4 dosing sizes based on your dogs body weight. The product is available for all weights in packs of 3-doses and packs of 6-doses. Vectra 3D Purple for Dogs & Puppies is intended for dogs between 56 and 95 pounds and this particular package comes with 6 doses. For heavier dogs, use Vectra 3D Red and for lighter dogs use Vectra 3D Green or Vectra 3D Blue. Vectra 3D is also available for Cats and Kittens.

Please read the application instructions thoroughly before applying Vectra 3D to your dogs.

Key Features

  • Kills fleas, ticks, sand flies, mosquitoes, lice and mites on contact before they can bite
  • Repels pests for full month per dose
  • Comes in Four varieties depending on dog weight: Green for dogs 2.5-20 lbs, Blue for dogs 21-55 lbs, Purple for dogs 55-95 lbs and Red for dogs over 95 lbs
  • Contains: Dinotefuran, Permethrin, and Pyriproxyfen


Active Ingredients

Dinotefuran 4.95%
Pyriproxyfen 0.44%
Peremethrin 36.08%


How to Apply

  1. Use Restrictions: USE ONLY ON DOGS. Do not use on cats or other animals. Do not have contact or allow children to have contact with treated areas until treatment is completely dry.
  2. Remove applicator tube from package.
  3. The dog should be standing or in a comfortable position for easy application.
  4. Holding the applicator tube upright, pointing away from face, place thumb and index finger around the applicatortip under the large disk. With other hand, grasp the stem of applicator tip above smaller disk.
    Press down firmly on small disk until both disks meet, piercing the seal.
  5. Using the applicator tip part the hair at the base of the tail and begin applying the product onto the skin in a continuous line from the base of the tail along the center of the back all the way up to the shoulder blades, as shown in the diagram, squeezing the applicator tube until its empty. Avoid superficial application to thedogs hair.
    Do not get the product in the dogs eyes or mouth.
  6. Discard empty applicator tube as outlined in Storage and Disposal section.
  7. Repeat every month or as recommended by your veterinarian.
  8. For optimal treatment control and prevention of adult and immature flea stages, ticks, mosquitoes, lice, mites (excluding mange mites) biting flies, and sand flies, year-round treatment is recommended.

Storage and Disposal

Do not contaminate water, food or feed by storage and disposal.


Store in a cool, dry place. Protect from freezing.


Place in trash or offer for recycling if available. Never place unused products down any indoor or outdoor drain.

Precautionary Statements

Fatal Warning

Do not use on cats. Due to their unique physiology and inability to metabolize certain compounds, this product must not be used on cats. If applied to a cat, or ingested by a cat that actively grooms a recently treated dog, this product may have serious harmful effects. If this occurs, contact your veterinarian immediately.

Hazardous to Humans

Keep out of reach of children.
Causes substantial but temporary eye injury. Harmful if swallowed or absorbed through the skin. Do not get in eyes or clothing. Avoid contact with skin. Wash thoroughly with soap and water after handling and before eating, drinking, chewing gum and tobacco. Remove and wash contaminated clothing before reuse.

Hazardous to Domestic Animals

For external use on dogs only. Do not use on puppies less than 8 weeks old.
Do not use this product on debilitated, aged, medicated pregnant, or nursing animals or animals known to be sensitive to pesticide products without first consulting a veterinarian. Sensitivity, such as slight transitory redness of the skin at the site of application, may occur after using ANY pesticide product for dogs. If signs of sensitivity occur, bathe your dog with mild soap or shampoo and rinse with large amounts of water. If signs of individual animal sensitivity occur and persist, contact your veterinarian. Have the product container or label with you when calling your veterinarian for advice.
For external use on dogs only. Do not use this product on cats.

First Aid

If in Eyes

    Hold eye open and rinse slowly and gently with water for 15-20 minutes. Remove contact lenses, if present, after the first five minutes, then continue rinsing. Call a poison control center doctor immediately for treatment advice.

If Swallowed

    Call a poison control center doctor for treatment advice. Do not induce vomiting unless told to do so by poison control center or doctor. Have a person sip a glass of water if able to swallow. Do not give anything to an unconscious person.

If on Skin

    Take off contaminated clothing. Rinse skin immediately with plenty of water for 15-20 minutes. Call a poison control center, doctor, or 1-800-999-0297 or after 6 pm EST 1-888-426-4435 immediately for treatment advice.

Have the product container or label with you when calling a poison control center or doctor or going for treatment. Youmay contact 1-800-999-0297 weekdays between 9 am and 6 pm EST or 1-888-426-4435 for emergency medicaltreatment information.

Possible Side Effects

Monitor your dog after application. Individual sensitivity, such as slight transitory redness, erythema, itching -pruritus- or other signs of discomfort at the site of application, may occur after using ANY pesticide product for dogs. If signs of sensitivity occur, bathe your dog with mild soap or shampoo and rinse with large amounts of water. If signs of individual dog sensitivity occur and persist, contact your veterinarian. Gastrointestinal signs such as vomiting or diarrhea have also been reported, if these signs occur, consult your veterinarian or call us at 1-800-999-0297. Have the product container or label with you when calling your veterinarian for advice.


View Vectra 3D official FAQ.

Can Vectra 3D be used on pets other than dogs?

No. Do not use Vectra 3D on cats, or any other animal.

Do parasites have to bite in order for Vectra 3D to work?

No. Vectra 3D kills fleas and ticks through contact with your pet's fur. No biting necessary.

Does Vectra 3D control other parasites besides fleas and ticks?

Certainly. The active ingredients of Vectra 3D are proven to protect your dog from the six major vectors: Fleas, Ticks, Mosquitoes, Flies, Mites* and Lice. (*Excluding mange mites.)

How does Vectra 3D kill fleas and ticks on my dog?

Vectra 3D protects because of the triple-action formula of Dinotefuran, Pyriproxifen, and Permethrin. These ingredients work together to kill fleas and ticks on contact and repel these dangerous parasites by causing a "hot foot" reaction - once parasites land on your dog, they are physically compelled to crawl back up the fur, away from the skin, without biting.

How quickly does Vectra 3D begin to work?

Clinical studies have shown that on dogs treated with the active ingredients in Vectra 3D, flea feeding is reduced within five minutes and fleas are killed in 6 hours.

Is it okay for my pet to bathe or swim after applying Vectra 3D?

Sure. Vectra 3D remains effective in controlling fleas and ticks for a full month if your pet is immersed in water through swimming or regular bathing.

Is it okay to apply Vectra 3D more than once a month?

No, only apply Vectra 3D once in a 30-day period. It is not necessary for more frequent applications - Vectra 3D provides powerful protection against fleas and ticks for a full month!

What age does my dog need to be before I can apply Vectra 3D?

Vectra 3D can be used on puppies as young as 8 weeks of age.

Why am I still seeing fleas on my dog after applying Vectra 3D?

The repellency of Vectra 3D causes fleas and ticks to rise to the surface of your dog's fur coat where they are visible. A happy, healthy flea or tick would much prefer to remain invisible below the fur. Parasites seen on your dog after application are no longer a threat to the animal and are about to perish.


Review Summary
1 Reviews
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100% Recommend this product (1 of 1 responses)
By Donna
Northwest Indiana
Vectra 3D 21-21-55lbs
September 16, 2022
My dog has thin hair so it’s a little messy, takes a while to dry and will get on the furniture and bedding. Pet is sensitive to oral medications, gave this topical a try. Gives her an upset tummy and makes her drowsy so we apply it at night and she’s fine. Other than that, does a great job keeping her pest free. Milder side effects than oral medicines we’ve tried.
  • Good at keeping fleas and ticks away.
  • A little messy, mild side effects.

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