--- product_id: 291601197 title: "Shield Flea & Tick Treatment for Medium Dogs 21-40 lbs. Count of 3" brand: "frontline" price: "B/.129" currency: PAB in_stock: true reviews_count: 8 category: "Frontline" url: https://www.desertcart.com.pa/products/291601197-shield-flea-and-tick-treatment-for-medium-dogs-21-40 store_origin: PA region: Panama --- # fastest working Frontline formula effective for dogs 21-40 lbs 30-day waterproof protection Shield Flea & Tick Treatment for Medium Dogs 21-40 lbs. Count of 3 **Brand:** frontline **Price:** B/.129 **Availability:** βœ… In Stock ## Summary > πŸ›‘οΈ Keep your best friend unstoppable with Frontline Shield – protection that never quits! ## Quick Answers - **What is this?** Shield Flea & Tick Treatment for Medium Dogs 21-40 lbs. Count of 3 by frontline - **How much does it cost?** B/.129 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/291601197-shield-flea-and-tick-treatment-for-medium-dogs-21-40) ## 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 - β€’ **Month-Long Shield:** Waterproof formula keeps your dog protected for a full 30 days, rain or shine. - β€’ **Rapid Action Defense:** Fastest working Frontline product that kills and repels fleas, ticks, and mosquitoes quickly. - β€’ **Effortless Application:** Topical treatment deposits in sebaceous glands for continuous protection, even after swimming. - β€’ **Puppy-Friendly Formula:** Safe and effective for puppies as young as 9 weeks and weighing at least 5 pounds. - β€’ **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 FRONTLINE Shield for Dogs, from the number 1 name in flea and tick protection (1), 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 (2). Apply monthly to ensure your dog is protected all year long. So, no matter your plans, FRONTLINE Shield protects from fleas and ticks β€”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: (1) BI Marketing Excellence Survey performed by Kynetec, November 2023. (2) Waterproof 24 hours after application. Review: it works! - It works for my beagle, who loves to go on walks and play in the long grass. i washed my dog after a walk in the woods, and I actually saw dead ticks coming off of her in the bath, so any ticks or fleas that get on her die from a bite. tips for others who want to use this: 1. I always part the fur to make sure the liquid touches the skin, and I apply it to three different places on my dog's neck and upper back. 2. I also make sure to rub the liquid into the skin a little bit. I wear gloves to make this process safer. 3. I do not let my dog get wet for 3 days after applying, no baths, no walks in the rain, nothing wet. 4. i always make sure to apply this on the same day every month, even over the winter, to make sure she is always protected. Review: Great product! - Set a monthly reminder on your phone and apply the product. Your dog will not have neurological problems after application. Minimal days of a greasy area where med is applied. Definitely beats an oral tab that can cause seizures. This is what our vet recommends and sells in his clinic for dogs that do not tolerate the oral tablets. Our dogs (2 inside dogs and 2 outside farm dogs) do not have fleas or ticks. ## 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 | | Active Ingredients | Fipronil, Permethrin, Pyriproxyfen | | Age Range Description | All Life Stages | | Allergen Information | Octopus Free | | Best Sellers Rank | #14,848 in Pet Supplies ( See Top 100 in Pet Supplies ) #61 in Dog Flea Drops | | Brand | Frontline | | Brand Name | Frontline | | Customer Reviews | 4.2 out of 5 stars 583 Reviews | | Dog Breed Size | Medium | | Included Components | Treatment | | Item Form | Stick | | Item Type Name | Topical | | Item Volume | 6 Milliliters | | Manufacturer | Boehringer Ingelheim Animal Health | | Manufacturer Part Number | 849 | | Model Number | 849 | | Scent | Unscented | | Scent Name | Unscented | | Target Species | Dog | | UPC | 350604064930 | | Unit Count | 1.00 Count | | Volume | 6 Milliliters | | 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 ![Shield Flea & Tick Treatment for Medium Dogs 21-40 lbs. Count of 3 - Image 1](https://m.media-amazon.com/images/I/71A0Hl8zuvL.jpg) ![Shield Flea & Tick Treatment for Medium Dogs 21-40 lbs. Count of 3 - Image 2](https://m.media-amazon.com/images/I/819PEkMogyL.jpg) ![Shield Flea & Tick Treatment for Medium Dogs 21-40 lbs. Count of 3 - Image 3](https://m.media-amazon.com/images/I/81TKON2cvRL.jpg) ![Shield Flea & Tick Treatment for Medium Dogs 21-40 lbs. Count of 3 - Image 4](https://m.media-amazon.com/images/I/81emsLKl7vL.jpg) ![Shield Flea & Tick Treatment for Medium Dogs 21-40 lbs. Count of 3 - Image 5](https://m.media-amazon.com/images/I/81TyI4z0dbL.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. ## Customer Reviews ### ⭐⭐⭐⭐⭐ it works! *by M***M on March 23, 2026* It works for my beagle, who loves to go on walks and play in the long grass. i washed my dog after a walk in the woods, and I actually saw dead ticks coming off of her in the bath, so any ticks or fleas that get on her die from a bite. tips for others who want to use this: 1. I always part the fur to make sure the liquid touches the skin, and I apply it to three different places on my dog's neck and upper back. 2. I also make sure to rub the liquid into the skin a little bit. I wear gloves to make this process safer. 3. I do not let my dog get wet for 3 days after applying, no baths, no walks in the rain, nothing wet. 4. i always make sure to apply this on the same day every month, even over the winter, to make sure she is always protected. ### ⭐⭐⭐⭐⭐ Great product! *by V***P on January 1, 2026* Set a monthly reminder on your phone and apply the product. Your dog will not have neurological problems after application. Minimal days of a greasy area where med is applied. Definitely beats an oral tab that can cause seizures. This is what our vet recommends and sells in his clinic for dogs that do not tolerate the oral tablets. Our dogs (2 inside dogs and 2 outside farm dogs) do not have fleas or ticks. ### ⭐⭐⭐⭐⭐ Came on time *by A***R on December 13, 2025* Came as advertised ## 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 --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.pa/products/291601197-shield-flea-and-tick-treatment-for-medium-dogs-21-40](https://www.desertcart.com.pa/products/291601197-shield-flea-and-tick-treatment-for-medium-dogs-21-40) --- *Product available on Desertcart Panama* *Store origin: PA* *Last updated: 2026-05-18*