ImmuCell First Defense Tri-Shield is an oral gel for newborn calves that provides passive immunity against scours-causing pathogens: Rotavirus, Coronavirus, and K99+ E. coli. This calf supplement supports calf health during the critical early period and fits seamlessly into newborn calf care routines on cattle operations. The 12-applicator pack offers convenient, single-dose delivery—one dose per calf—for straightforward on-farm use. Bovine origin formula; part of trusted livestock health products for improving calf care efficiency.
First Defense tri-shield
First Defense tri-shield
ImmuCell First Defense Tri-Shield is an oral gel for newborn calves that provides passive immunity against scours-causing pathogens: Rotavirus, Coronavirus, and K99+ E. coli. This calf supplement supports calf health during the critical early period and fits seamlessly into newborn calf care routines on cattle operations. The 12-applicator pack offers convenient, single-dose delivery—one dose per calf—for straightforward on-farm use. Bovine origin formula; part of trusted livestock health products for improving calf care efficiency.
About This Item
What does First Defense Tri-Shield do?
How is the product administered?
How many calves does one pack treat?
Which animals is it approved for?
Is this a vaccine?
What is the product’s origin?
Pet Health Benefits
Every product we carry at PetMeds Direct is selected with care to support your pet's health from nose to tail.
Pain Relief
Vet-approved medications to reduce inflammation and ease joint or post-surgery pain
Heart Health
Supplements and meds that help manage blood pressure and support cardiovascular function
Disease Prevention
Vaccines and immune-boosting supplements help reduce the risk of serious illness
Skin & Coat Care
Dermatology products and omega-rich formulas promote healthy skin and a shiny coat
Happy Pet Parents
Not sure how to get started with PetMeds Direct? We make caring for your pet easier than ever — whether it's managing prescriptions, stocking up on supplements, or getting expert advice. Explore below for helpful ways pet parents use PetMeds Direct to stay on top of their pets' health. At PetMeds Direct, we're proud to serve pet lovers all across Canada.
🐾 Marcus L. - Toronto, ON
"From ordering to delivery, everything was seamless. I even got a helpful reminder email about my dog's monthly flea prevention. PetMeds truly cares about our pets!"
🐶 Jenna R. – Vancouver, BC
"I'm so glad I found PetMeds Direct. They handled everything with my vet directly, and my dog's prescription arrived at my door in just two days."
🐱 Amy Allen - Calgary, AB
"As a cat mom managing ongoing medication, PetMeds has been a total game-changer. They make refills automatic, and I always get a heads-up before anything ships. So reliable!"
About PetMeds Direct
PetMeds Direct was founded with one simple mission: to make pet healthcare easier, faster, and more compassionate for Canadian pet parents. What started as a small idea — helping busy families manage their pets’ prescriptions — has grown into a trusted nationwide pharmacy serving dogs, cats, and everything in between. We believe pets are family, and every tail wag and purr deserves top-tier care. That’s why we work closely with vets, offer fast shipping, and make prescriptions and wellness products more accessible than ever. At PetMeds Direct, we’re not just delivering meds — we’re delivering peace of mind.
Healthy Pets, Happy Homes
Caring for your pet’s health has never been easier. With just a few clicks, PetMeds Direct delivers trusted medications and wellness products right to your door — fast, affordable, and vet-approved. Say goodbye to last-minute pharmacy runs and hello to peace of mind.
Trusted & Certified
PetMeds Direct is a licensed and certified pharmacy, committed to providing safe, authentic medications for your pets.
Accreditation No. 311012