---
product_id: 291601197
title: "- FRONTLINE Shield Flea & Tick Treatment for Medium Dogs 21-40 lbs. Count of 3"
brand: "frontline"
price: "$U5056"
currency: UYU
in_stock: true
category: "Frontline"
url: https://www.desertcart.uy/products/291601197-frontline-shield-flea-and-tick-treatment-for-medium-dogs-21
store_origin: UY
region: Uruguay
---

# fastest working Frontline formula effective for dogs 21-40 lbs 30-day waterproof protection - FRONTLINE Shield Flea & Tick Treatment for Medium Dogs 21-40 lbs. Count of 3

**Brand:** frontline
**Price:** $U5056
**Availability:** ✅ In Stock

## Summary

> 🛡️ Keep your best friend unstoppable with Frontline Shield – protection that never quits!

## 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?** $U5056 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/291601197-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:** Waterproof formula keeps your dog protected for a full 30 days, rain or shine.
- • **Rapid Action Defense:** Fastest working Frontline product that kills and repels fleas, ticks, and mosquitoes quickly.
- • **Effortless Application:** Topical treatment deposits in sebaceous glands for continuous protection, even after swimming.
- • **Puppy-Friendly Formula:** Safe and effective for puppies as young as 9 weeks and weighing at least 5 pounds.
- • **Broad Spectrum Protection:** Targets all tick stages, including Lyme disease carriers, plus chewing lice and flea eggs.

## Overview

FRONTLINE Shield Flea & Tick Treatment offers fast, proven, and waterproof protection for medium dogs (21-40 lbs) with a powerful 30-day formula that kills and repels fleas, ticks (including Lyme disease carriers), mosquitoes, and chewing lice. Safe for puppies 9 weeks and older, it continuously replenishes through sebaceous glands, ensuring your dog stays protected indoors and outdoors, no matter the adventure.

## Description

desertcart.com : FRONTLINE Shield Flea & Tick Treatment for Medium Dogs 21-40 lbs. Count of 3 : Pet Supplies

## Features

- FRONTLINE Shield provides proven flea and tick protection with repellency action against ticks and mosquitoes
- Kills and repels all stages of ticks, including those that may transmit Lyme 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08P3CYX3H |
| ASIN  | B08P3CYX3H |
| Age Range Description | All Life Stages |
| Best Sellers Rank | #38,467 in Pet Supplies ( See Top 100 in Pet Supplies ) #99 in Dog Flea Drops |
| Brand Name | Frontline |
| Breed Recommendation | Medium |
| Color | Blue Box |
| Customer Reviews | 4.2 4.2 out of 5 stars (437) |
| Date First Available | November 23, 2020 |
| Date First Available  | November 23, 2020 |
| 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 pr… |
| Included Components | Treatment |
| Item Dimensions LxWxH | 0.74 x 5.8 x 4.39 inches |
| Item Package Dimensions L x W x H | 5.83 x 4.37 x 0.87 inches |
| Item Weight | 1.13 ounces |
| Item model number | 849 |
| Item model number  | 849 |
| Manufacturer | Boehringer Ingelheim Animal Health |
| Manufacturer  | Boehringer Ingelheim Animal Health |
| Manufacturer recommended age  | 1 month and up |
| Model Name | Frontline Shield |
| Number of Items | 3 |
| Product Dimensions  | 0.74 x 5.8 x 4.39 inches; 1.13 ounces |
| Size | 3 Count |
| Specific Uses for Product | Parasites |
| Target Audience Keyword | dogs |
| Warranty Description | Contact the manufacturer. |

## Product Details

- **Active Ingredients:** Fipronil, Permethrin, Pyriproxyfen
- **Age Range (Description):** All Life Stages
- **Allergen Information:** Octopus Free
- **Brand:** Frontline
- **Dog Breed Size:** Medium
- **Item Form:** Stick
- **Item Volume:** 6 Milliliters
- **Scent:** Unscented
- **UPC:** 350604064930

## 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)

## Available Options

This product comes in different **Size** options.

## 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.

## 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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**Shop now:** [https://www.desertcart.uy/products/291601197-frontline-shield-flea-and-tick-treatment-for-medium-dogs-21](https://www.desertcart.uy/products/291601197-frontline-shield-flea-and-tick-treatment-for-medium-dogs-21)

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-04-25*