---
product_id: 346727220
title: "Frontline Shield Flea & Tick Treatment for Medium Dogs 21-40 lbs. Count of 3"
brand: "frontline"
price: "$777207"
currency: COP
in_stock: true
reviews_count: 5
category: "Frontline"
url: https://www.desertcart.co/products/346727220-frontline-shield-flea-and-tick-treatment-for-medium-dogs-21
store_origin: CO
region: Colombia
---

# Waterproof after 24 hrs Kills fleas in 5 mins 30-day full protection Frontline Shield Flea & Tick Treatment for Medium Dogs 21-40 lbs. Count of 3

**Brand:** frontline
**Price:** $777207
**Availability:** ✅ In Stock

## Summary

> 🐾 Protect your pup like a pro—fast, fierce, and foolproof!

## Quick Answers

- **What is this?** Frontline Shield Flea & Tick Treatment for Medium Dogs 21-40 lbs. Count of 3 by frontline
- **How much does it cost?** $777207 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co](https://www.desertcart.co/products/346727220-frontline-shield-flea-and-tick-treatment-for-medium-dogs-21)

## Best For

- frontline enthusiasts

## Why This Product

- Trusted frontline brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Month-Long Shield:** Provides continuous, 30-day protection against fleas, ticks, and mosquitoes—no gaps, no worries.
- • **Waterproof & Active:** Waterproof just 24 hours after application, ensuring protection even during swims or rainy walks.
- • **Rapid Action Defense:** Starts killing fleas within 5 minutes and ticks in just 1 hour, so your dog stays itch-free fast.
- • **Mosquito & Tick Repellent:** Repels disease-carrying ticks and mosquitoes, safeguarding your dog from Lyme and heartworm.
- • **Easy, Hassle-Free Application:** Topical, unscented formula that spreads quickly and replenishes through sebaceous glands for nonstop defense.

## Overview

Frontline Shield Flea & Tick Treatment for Medium Dogs (21-40 lbs) delivers rapid flea and tick elimination starting within minutes and offers a full 30 days of waterproof protection. Its advanced 3-in-1 formula repels mosquitoes and ticks that transmit serious diseases, while the easy-to-apply topical treatment continuously replenishes through your dog's skin oils. Trusted by millions, it’s the ultimate monthly defense for active dogs and their owners who never want to miss a moment together.

## 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)

Review: Great product
Review: Works great

## Features

- Starts killing fleas in 5 minutes* and ticks in 1 hour (*starting two days after application)
- Repels mosquitoes that may transmit heartworm disease
- Protects your dog for a full 30 days
- Convenient to use, easy to apply, waterproof 24 hours after application
- ls adult fleas, flea eggs & larvae and chewing lice

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08P3CYX3H |
| Active Ingredients | Fipronil, Permethrin, Pyriproxyfen |
| Age Range Description | All Life Stages |
| Allergen Information | Octopus Free |
| Allergen information | Octopus Free |
| Brand | Frontline |
| Brand Name | Frontline |
| Customer Reviews | 4.2 out of 5 stars 423 Reviews |
| Dog Breed Size | Medium |
| Included Components | Treatment |
| Item Form | Topical |
| Item Type Name | Topical |
| Item form | Topical |
| Item volume | 6 Milliliters |
| Manufacturer | Boehringer Ingelheim Animal Health |
| Scent | Unscented |
| Scent Name | Unscented |
| Target Species | Dog |
| UPC | 350604064930 |
| Volume | 6 Milliliters |

## Product Details

- **Active Ingredients:** Fipronil, Permethrin, Pyriproxyfen
- **Brand:** Frontline
- **Item form:** Topical
- **Item volume:** 6 Milliliters
- **Scent:** Unscented

## Images

![Frontline Shield Flea & Tick Treatment for Medium Dogs 21-40 lbs. Count of 3 - Image 1](https://m.media-amazon.com/images/I/71A0Hl8zuvL.jpg)
![Frontline Shield Flea & Tick Treatment for Medium Dogs 21-40 lbs. Count of 3 - Image 2](https://m.media-amazon.com/images/I/819PEkMogyL.jpg)
![Frontline Shield Flea & Tick Treatment for Medium Dogs 21-40 lbs. Count of 3 - Image 3](https://m.media-amazon.com/images/I/81TKON2cvRL.jpg)
![Frontline Shield Flea & Tick Treatment for Medium Dogs 21-40 lbs. Count of 3 - Image 4](https://m.media-amazon.com/images/I/81emsLKl7vL.jpg)
![Frontline Shield Flea & Tick Treatment for Medium Dogs 21-40 lbs. Count of 3 - Image 5](https://m.media-amazon.com/images/I/81TyI4z0dbL.jpg)

## Questions & Answers

**Q: Both of my dog's weights hover around 20 lbs, sometimes a bit over.  Should I choose the small or medium size product?**
A: The box will include the weight recommendation. I think 20 is medium but check the box to make sure.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product
*by A***R on 1 June 2025*



### ⭐⭐⭐⭐⭐ Works great
*by B***I on 2 August 2025*



### ⭐⭐⭐⭐⭐ Easy to apply
*by E***D on 16 May 2025*



## Frequently Bought Together

- Frontline Shield Flea & Tick Treatment for Medium Dogs 21-40 lbs. Count of 3
- Frontline Shield Flea & Tick Treatment for Large Dogs 41-80 lbs. Count of 3
- FRONTLINE Shield Flea & Tick Treatment for Small Dogs 11-20 lbs., Count of 3

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*Product available on Desertcart Colombia*
*Store origin: CO*
*Last updated: 2026-03-01*