More than a Breakthrough.
A conditionally approved pour-on for New World screwworm and cattle fever tick in cattle is here.
IMPORTANT SAFETY INFORMATION: Not for use in humans. Keep out of reach of children. Accidental exposure may cause skin and eye irritation. Highly flammable. Keep away from heat, sparks, open flame or other sources of ignition. Use only for the prevention and treatment of infestations caused by New World screwworm (Cochliomyia hominivorax) larvae (myiasis) and treatment and control of cattle fever tick (Rhipicephalus microplus) in beef cattle 2 months of age and older and replacement dairy heifers less than 20 months of age. Not for use in bulls intended for breeding 1 year of age and older, dairy calves, and veal calves. Cattle must not be slaughtered for human consumption within 98 days of treatment. For complete safety information and product dosing instructions, refer to the product label.
Helping you meet the challenges of today with the innovations of tomorrow.
For our animals, our industry and our future. This is why Merck Animal Health Works.
Helping you meet the challenges of today with the innovations of tomorrow.
Not only do we understand the industry, we’ve got a passion for it. Because we live it. That’s why the support we provide goes far beyond products. When it comes to our products, integrity lives at the forefront. We’ll always be transparent in our practices, pricing and marketing.
Cow-Calf & Stocker
Feedlot
Dairy
See the high-quality products and next-level technology solutions that allow Merck Animal Health to support your dairy in a way no other company can.
Veterinarian
Meet the Game Changers
Learn about producers finding new ways to advance their operations, improve the industry and ensure their legacies.
Cattle News
Innovation + Intelligence
Merck Animal Health is doubling down on our commitment to innovation.

We’re proud to include Allflex® and SenseHub® monitoring in our comprehensive portfolio of cattle solutions.
Get the latest updates!
Sign up to receive cattle health management insights, industry news and more sent straight to your inbox.
News & Insights
Go To United States
Algeria
Argentina
Australia
Austria
Bahrain
Belgium (Dutch)
Brazil
Canada (English)
Chile
Colombia
Croatia
Czech Republic
Denmark
Ecuador
Egypt
Finland
France
Germany
Greece
Hungary
India
Indonesia
Iraq
Ireland
Israel
Italy
Japan
Jordan
Kuwait
Lebanon
Malaysia
Mexico
Morocco
Netherlands
New Zealand
Norway
Oman
Panama
Peru
Philippines
Poland
Portugal
Qatar
Romania
Russian Federation
Saudi Arabia
South Africa
South Korea
Spain
Sweden
Switzerland (French)
Taiwan
Thailand
Tunisia
Turkey
Ukraine
United Arab Emirates
United Kingdom
Uruguay
Yemen
Global