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FRONTLINE Shield Flea & Tick Treatment for Medium Dogs 21-40 lbs., Count of 3

4.2 4.2 out of 5 stars 394 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Dog Flea Drops by Frontline
Limited time deal NO_OF_HOURS hours NO_OF_MINUTES minutes Limited time deal NO_OF_MINUTES minutes Limited time deal NO_OF_MINUTES minutes NO_OF_SECONDS seconds Limited time deal NO_OF_SECONDS seconds Limited time deal
$37.59 with 20 percent savings $12.53 per Count
List Price: $46.99

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Purchase options and add-ons

Brand Frontline
Item Form Stick
Scent Topical
Age Range (Description) All Life Stages
Item Weight 1.23 ounces
Active Ingredients Permethrin, Pyriproxyfen, Fipronil
Item Volume 6 Milliliters
Target Species Dog
Allergen Information Octopus Free

About this item

  • FRONTLINE Shield, from the #1 name in flea and tick protection*, provides proven flea and tick protection with repellency action against ticks and mosquitoes.* Data on file at Boehringer Ingelheim.
  • Kills and repels all stages of ticks, including those that may transmit Lyme disease.
  • Repels mosquitoes that may transmit heartworm disease.
  • Kills chewing lice and adult fleas, flea eggs and larvae to prevent re-infestations.
  • Convenient to use, easy to apply, waterproof formula protects for a full 30 days.
  • For dogs big and small; effective for puppies as young as 9 weeks and weighing at least 5 pounds.

Customer ratings by feature

Easy to use
4.1 4.1
Scent
4.0 4.0
Value for money
2.8 2.8
Flavor
1.8 1.8
See all reviews

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FRONTLINE Shield Flea & Tick Treatment for Medium Dogs 21-40 lbs., Count of 3
$37.59 ($12.53/Count)
Get it as soon as Monday, May 13
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FRONTLINE Shield Flea & Tick Treatment for Large Dogs 41-80 lbs., Count of 3
$37.59 ($12.53/Count)
Get it as soon as Tuesday, May 14
In Stock
Ships from and sold by Amazon.com.
+
FRONTLINE Shield Flea & Tick Treatment for Small Dogs 11-20 lbs., Count of 3
$37.59 ($12.53/Count)
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From the brand

Previous page
  2. Frontline brand products logo. Protect your dog or cat with Frontline Plus flea and tick prevention

    THE #1 NAME IN FLEA & TICK PROTECTION*

    FRONTLINE Brand Products are effective topical solutions designed to help protect dogs and cats from fleas and ticks. FRONTLINE Plus and FRONTLINE Gold have formulas for dogs or cats. FRONTLINE Shield, with added mosquito repellency, is for dogs only.

  3. Frontline Shield is formulated to repel ticks and mosquitoes. repelente de mosquitos para perros
    Frontline Shield flea and tick treatment and mosquito repellent for small dogs six month pack
    Frontline Shield flea and tick treatment and mosquito repellent for medium dogs six month pack
    Frontline Shield flea and tick treatment and mosquito repellent for large dogs six month pack

    FRONTLINE Shield for Dogs

    Visit the Store

  4. Frontline Plus for Cats and Kittens has been trusted by pet owners for over twenty years
    Frontline Plus flea and tick monthly prevention topical for cats and kittens three doses
    Frontline Plus flea and tick monthly prevention topical for cats and kittens six doses
    Frontline Plus flea and tick monthly prevention topical for cats and kittens eight doses

    FRONTLINE Plus for Cats

    Visit the Store

  5. Frontline Plus for Dogs and Puppies has been trusted by pet owners for over twenty years
    Frontline Plus flea and tick medicine for small dogs six topical nonprescription applicators pack
    Frontline Plus flea and tick medicine for medium dogs six topical nonprescription applicators pack
    Frontline Plus flea and tick medicine for large dogs pack of six topical nonprescription applicators

    FRONTLINE Plus for Dogs

    Visit the Store

  6. Frontline comes in an easy to use applicator. Use spring summer fall winter to kill fleas and ticks
    Frontline Gold flea and tick treatment for small dogs six month supply pack
    Frontline Gold flea and tick treatment for medium dogs six month supply pack
    Frontline Gold flea and tick treatment for large dogs six month supply pack

    FRONTLINE Gold for Dogs

    Visit the Store

  7. Frontline comes in an easy to use applicator. Apply during all seasons to prevent fleas and ticks
    Frontline Gold for Cats three month supply pack. suministro de tratamiento para tres meses
    Frontline Gold for Cats six month supply pack. suministro de tratamiento para seis meses
    Frontline Gold flea and tick protection for cats and kittens

    FRONTLINE Gold for Cats

    Visit the Store

  8. Frontline brands break the flea life cycle by eradicating adult fleas eggs and larvae. Treat monthly

  9. What is FRONTLINE?

    FRONTLINE Brand Products are effective, easy-to-apply topical flea & tick preventives. FRONTLINE Plus and FRONTLINE Gold have formulas for dogs or cats. FRONTLINE Shield is for dogs only. All FRONTLINE Brand Products feature waterproof formulas that last a full 30 days.

    Why should I protect my dog or cat from fleas & ticks?

    Fleas & ticks are a year-round threat. FRONTLINE Brand Products help protect dogs or cats from these pests and monthly use can help prevent infestations.

Next page

From the manufacturer

Smiling man outside with healthy dogs. Frontline Shield awarded Newsweek most trusted 2023
Frontline Shield repels ticks that may carry Lyme disease and mosquitoes that may carry heartworms
Learn more about fleas and ticks. They are a yearround threat and can get inside on your clothes

How to Apply FRONTLINE Shield for Dogs

Step one woman reading instructions on pack before applying flea and tick non prescription treatment

Step two woman holding applicator upright and away from face before cutting off tip with scissors

Step three prep dog for flea treatment application by using fingers to part fur so skin is visible

Step four place the open applicator to dogs skin and squeeze out all contents on dog

Read full instructions before use. Proper application varies based on dog size. Shown here: Size Small 11-20 lbs.

Hold applicator upright away from you and your dog’s face, cut applicator tip with scissors to open.

Part dog’s hair until skin is visible. Place applicator tip directly against exposed skin.

Apply the entire applicator contents directly onto the dog’s skin in 1 to 4 sites depending on your dog’s weight.

Pack of for extra small dog breeds tratamiento de pulgas y garrapatas para perros extra pequenos Pack of Frontline Shield for small dog breeds tratamiento de pulgas y garrapatas perros pequenos Pack of Frontline Shield for medium dog breeds medicina para matar pulgas y garrapatas Pack of Frontline Shield for large dog breeds prevención de pulgas y garrapatas para perros grandes Pack of Frontline Shield for xl dog breeds control de pulgas y garrapatas para perros extra grandes Do not use FRONTLINE Shield on cats. For feline flea and tick treatment, use FRONTLINE Plus for Cats
FRONTLINE Shield for Extra-Small Dogs FRONTLINE Shield for Small Dogs FRONTLINE Shield for Medium Dogs FRONTLINE Shield for Large Dogs FRONTLINE Shield for Extra-Large Dogs FRONTLINE Plus for Cats
Customer Reviews
4.2 out of 5 stars
443
4.3 out of 5 stars
455
4.2 out of 5 stars
394
4.3 out of 5 stars
1,396
4.4 out of 5 stars
387
4.3 out of 5 stars
43,634
Price $66.39 $66.39 $66.39 $66.39 $66.39 $55.29
Recommended Pet Size 5 to 10 pounds 11 to 20 pounds 21 to 40 pounds 41 to 80 pounds 81 to 120 pounds Cats and kittens over 1.5 pounds
Minimum Age of Pet for Use Dogs and puppies 9 weeks and older Dogs and puppies 9 weeks and older Dogs and puppies 9 weeks and older Dogs and puppies 9 weeks and older Dogs and puppies 9 weeks and older Cats and kittens over 8 weeks old
Available Sizes 3 and 6-Dose 3 and 6-Dose 3 and 6-Dose 3 and 6-Dose 3 and 6-Dose 3, 6 and 8-Dose
Do not use on cats Do not use on cats Do not use on cats Do not use on cats Do not use on cats For use on cats only

Product information

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FRONTLINE

FRONTLINE Shield Flea & Tick Treatment for Medium Dogs 21-40 lbs., Count of 3

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Product details

  • Product Dimensions ‏ : ‎ 0.74 x 5.8 x 4.39 inches; 1.23 ounces
  • Manufacturer recommended age ‏ : ‎ 1 month and up
  • Item model number ‏ : ‎ 849
  • Date First Available ‏ : ‎ November 23, 2020
  • Manufacturer ‏ : ‎ Boehringer Ingelheim Animal Health
  • ASIN ‏ : ‎ B08P3CYX3H
  • Country of Origin ‏ : ‎ Germany
  • Customer Reviews:
    4.2 4.2 out of 5 stars 394 ratings

Looking for specific info?

Product Description

FRONTLINE® Shield for Dogs, from the #1 name in flea and tick protection*, is the fastest working FRONTLINE® product. It is proven flea and tick protection with repellency action against ticks and mosquitoes. FRONTLINE Shield repels ticks that may transmit Lyme disease and mosquitos that may lead to heartworm disease. The long-lasting, 3-in-1 flea and tick topical formula protects your dog for a full 30 days. It is an effective flea and tick treatment for pups big and small, effective for puppies as young as 9 weeks and weighing at least 5 pounds. After application, the treatment rapidly covers your dog's entire body and deposits in the sebaceous glands. These glands act as a reservoir, continuously replenishing the treatment onto your dog, working even if your dog gets wet.** Apply monthly to ensure your dog is protected all year long. So, no matter your plans, FRONTLINE Shield protects from fleas and ticks —inside your house, outside on walks and hikes, and everywhere in-between. Protect your dog with FRONTLINE Shield so you can go anywhere together. Subscribe and save today to make it easier to keep your dogs or cats protected year-round and make sure you never run out of FRONTLINE Shield. Be sure to visit our brand store and follow us to stay up to date on new FRONTLINE products, features, tips and more. References: * Data on file at Boehringer Ingelheim. ** Waterproof 24 hours after application

Top Brand: Frontline

Highly Rated
100K+ customers rate items from this brand highly
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Important information

Safety Information

WARNING: Causes substantial but temporary eye injury. Do not get in eyes or on clothing. Harmful if swallowed. Wash thoroughly with soap and water after handling and before eating, drinking, chewing gum, using tobacco or using the toilet. Remove and wash clothing that may have come in contact with the product before reuse.

Directions

1. To REMOVE Applicator: Prior to open separate one blister by tearing along perforation. 2. TO OPEN, use scissors to cut along dotted line of single blister, then pull apart foil and remove the applicator. OR fold on line at corner, tear and open at slit and remove the applicator. 3. HOLD Applicator Upright away from you and your dog’s face, cut applicator tip with scissors to open. Do not get product in your dog’s eyes or mouth. 4. FOR X-SMALL or SMALL size: APPLY FRONTLINE® Shield Part dog’s hair until skin is visible. Place applicator tip directly against exposed skin. Apply the entire contents by squeezing the entire applicator contents onto dog’s skin, at a single site between the shoulder blades. Ensure that FRONTLINE® Shield for Dogs is not applied superficially on dog’s hair. 5. FOR MEDIUM and LARGE size: APPLY FRONTLINE® Shield Part dog’s hair until skin is visible. Place applicator tip directly against exposed skin. Apply the product evenly to three spots on the dog’s back, starting between the shoulder blades and continuing on to the second and third spots, squeezing the applicator until empty. Ensure that FRONTLINE® Shield for Dogs is not applied superficially on dog’s hair. 6. FOR X-LARGE size: APPLY FRONTLINE® Shield Part dog’s hair until skin is visible. Place applicator tip directly against exposed skin. Apply the product evenly to four spots on the dog’s back, starting between the shoulder blades and continuing on to the second, third and fourth spots, squeezing the applicator until empty. Ensure that FRONTLINE® Shield for Dogs is not applied superficially on dog’s hair.

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FRONTLINE Shield Flea & Tick Treatment for Medium Dogs 21-40 lbs., Count of 3
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Apex Plus Flea and Tick Prevention for Dogs | Medium (23-44 lbs) | 3-Month Supply | Dog Flea and Tick Treatment | 24-Hour Activation, Waterproof, 30-Day Protection
Details
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Price-20% $37.59
List: $46.99		$94.99-27% $30.02
Typical: $40.99		-20% $66.39
List: $82.99		-15% $46.74
Typical: $54.99		$14.99
Delivery
Get it as soon as Monday, May 13
Get it as soon as Tuesday, May 14
Get it as soon as Tuesday, May 14
Get it as soon as Monday, May 13
Get it as soon as Tuesday, May 14
Get it as soon as Monday, May 13
Customer Ratings
4.24.2 out of 5 stars394
4.44.4 out of 5 stars682
4.54.5 out of 5 stars13,810
4.24.2 out of 5 stars443
4.54.5 out of 5 stars567
4.34.3 out of 5 stars69
Easy to use
4.1
4.1
4.2
4.2
4.4
4.7
Value for money
2.8
3.1
3.4
3.0
3.8
4.1
Flavor
1.8
2.2
3.1
4.8
2.4
5.0
Scent
4.0
3.6
3.2
3.5
4.4
—
Sold By
Amazon.com
Amazon.com
Amazon.com
Amazon.com
Amazon.com
Apex Animal Health
target audience
Dog
Adult
Dogs
Dog
Adult
—
age range
All Life Stages
All Life Stages
All Life Stages
All Life Stages
All Life Stages
Over 8 Weeks of Age
scent
Topical
No Scent
Unscented
Topical
No Scent
—
form
Stick
Stick
Stick
Stick
Stick
Drops
volume
6 milliliters
4.02 milliliters
302.4 milliliters
3 milliliters
8.04 milliliters
—
active ingredients
Fipronil, Permethrin, Pyriproxyfen
Fipronil, (S)-methoprene, Pyriproxyfen
fipronil and (S)-methoprene
Fipronil, Permethrin, Pyriproxyfen
Fipronil, (S)-methoprene, Pyriproxyfen
—
weight
0.08 pounds
0.2 pounds
1.6 ounces
0.09 pounds
—
—

Customer reviews

4.2 out of 5 stars
4.2 out of 5
394 global ratings
Expired Product.
1 Star
Expired Product.
We love your products. We noticed when opening the two packets were expired. 10/22. Not sure if we can send back or exchange. It was an $80 purchase.
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Top reviews from the United States

Carla
5.0 out of 5 stars Frontline flea and tick
Reviewed in the United States on March 25, 2024
Size: 6 CountVerified Purchase
Recommend by Veterinarians
Helpful
 Report
Product is always WONDERFUL. Have never found any product to be better or even the same
5.0 out of 5 stars Great and effective product
Reviewed in the United States on October 4, 2023
Size: 3 CountVerified Purchase
We have used Frontline products for over10+ years. We have tried both the inexpensive products and the high-end products ut Frontline has worked the best.
One person found this helpful
Helpful
 Report
Not true to size
4.0 out of 5 stars Helps protect my dog outside well
Reviewed in the United States on August 6, 2023
Size: 3 CountVerified Purchase
Having repurchased for its effectiveness
One person found this helpful
Helpful
 Report
Cidvish
5.0 out of 5 stars Works well
Reviewed in the United States on December 13, 2023
Size: 3 CountVerified Purchase
Works well
One person found this helpful
Helpful
 Report
trisha fallinske
5.0 out of 5 stars How good and fast that it worked.
Reviewed in the United States on August 29, 2021
Size: 3 CountVerified Purchase
I bought this product to stop my dog from scratching. She was scratching big sores in her neck and back she would not stop scratching in any form she was almost doing cartwheels and somersaults just so she could scratch her back in her stomach and she had just horrible scratching fits. I received this product August 29, 2021 I put it on her and the itching instantly stopped she’s laying down she’s relaxing she hasn’t moved to scratch in hours.
Love it. Will buy again.
5 people found this helpful
Helpful
 Report
Wanda
1.0 out of 5 stars SIDE EFFECT
Reviewed in the United States on April 22, 2024
Size: 6 CountVerified Purchase
Within 12-18 hours of applying this topical, my 35 pound German Pinscher began shaking his head A LOT. He is 9 years old and has never had an issue with his ears but I thought perhaps he had an infection. I didn't want to take any chances, so I bathed him and scrubbed the areas where I applied the topical. Eventually, the head shaking lessened and stopped completely after a couple of weeks. (I did take him to the vet to be checked for an ear infection and he didn't have an infection.)
Helpful
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Amazon Customer
3.0 out of 5 stars Easy to use
Reviewed in the United States on September 29, 2022
Size: 3 CountVerified Purchase
This worked well for 1st day or two.
Have a couple acres and feel it may have worked better if yard was treated.
However, I've used other products that get rid of fleas and kept them away regardless of property treatment.

Once I have yard treated this would be ok as the price is pretty good for it.
One person found this helpful
Helpful
 Report
Sarah
5.0 out of 5 stars Have not seen one tick
Reviewed in the United States on June 14, 2023
Size: 6 CountVerified Purchase
We have not found any ticks on our dogs at all!
Helpful
 Report