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May 4, 2026

In Observance of Mental Health Awareness Month, Merck Animal Health Announces Inaugural Veterinary Wellbeing Collective to Help Advance Veterinary Wellbeing

Merck Animal Health, known as MSD Animal Health outside of the United States and Canada, a division of Merck & Co., Inc., Rahway, N.J., USA (NYSE:MRK), today announced the U.S. Food and Drug Administration (FDA) has granted a conditional approval for EXZOLT™ CATTLE-CA1 (fluralaner topical solution). This innovative product is in the newest class of parasiticides known as isoxazolines.

FDA Approves BRAVECTO® QUANTUM (fluralaner for extended-release injectable suspension) from Merck Animal Health to Treat and Control Asian Longhorned Tick and Gulf Coast Tick for 12 Months in Dogs

FDA Approves NUMELVI™ (atinvicitinib tablets) for Dogs from Merck Animal Health – The First and Only Second-Generation Janus Kinase (JAK) Inhibitor for the Control of Pruritus Associated with Allergic Dermatitis

Merck Animal Health Wins 2025 S&P Global Award in Best Product and Best Product Companion Animal Food Animal Categories for NUMELVI and INNOVAX® ND-IBD-ILT, Respectively

S&P Global Animal Health awarded NUMELVI® Best Companion Animal Product and INNOVAX® ND-ILT-IBD Best Food Animal Product. This is the 8th consecutive year that Merck Animal Health earned an S&P Global Award and the first time a company has won the Best Product Companion Animal and Best Product Food Animal awards in the same year.

FDA Conditionally Approves Merck Animal Health’s EXZOLT™ CATTLE-CA1 for the Prevention and Treatment of New World Screwworm (Cochliomyia hominivorax) Larvae (myiasis)

Mexico’s SADER Approves Merck Animal Health’s EXZOLT® 5% Pour-On (Fluralaner 50 mg/mL) for the Prevention and Treatment of New World Screwworm (Cochliomyia hominivorax) Larvae (Myiasis)

Veterinarians and cattle producers in Mexico have access to a new tool to protect cattle from New World Screwworm, helping to safeguard Mexico’s beef supply RAHWAY, N.J., November 4, 2025 – Merck Animal Health, known as MSD Animal Health outside of the United States and Canada, a division of Merck & Co., Inc., Rahway, N.J

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Addressing America’s Rural Veterinarian Shortage Helps Support and Protect Our Food Supply

Food animal veterinarians are the unsung heroes of American agriculture. They do more than deliver calves or conduct routine check-ups. They inspect livestock, administer vaccines, and provide critical guidance on herd health. They support not just animal welfare but the viability of family farms, local economies, and the safety of the food on our tables.

Saving the Herds of Lapland: How an Antiparasitic Drug Helped Preserve Reindeer, Livelihoods, and Culture

In the early 1970s, reindeer herds across Lapland were in crisis. Parasitic infections were decimating calves, with losses in some herds reaching as high as sixty percent.

Protecting Tilapia Production: Field Evidence that Vaccination Saves Fish and Stabilizes Yields

Streptococcosis and a viral disease known as infectious spleen and kidney necrosis (ISKNV) are two of the most consequential infectious threats to tilapia farmers worldwide.

Youngstock: Why the Young Matter Most on Every Cattle Farm

Healthy calves and weanlings grow into productive cows and bulls that determine a herd’s longevity, fertility and financial return.

Immunity-led protection in calves: building health from day one

Calves arrive in the world with huge potential and fragile defenses. Immunity-led protection is a practical, evidence-informed approach that combines colostrum management, nutrition, vaccination and hygiene to support calf immunity while reducing pathogen exposure. The goal is simple: reduce disease, improve growth and productivity, and lower labor and treatment costs. Here is a clear, farm-focused guide to what immunity-led protection means in practice and how to put it into action.

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