LongRange® (eprinomectin) By Merial

An extended-release injection that gives up to 150 days of parasite control in a single dose.1,2

Impact of Parasitism

Learn how parasites affect your herd and how LONGRANGE works against this wide range of worms in various stages.
Protect Your Herd Health 

Why should you use LONGRANGE?

Cattle producers Dale Bowman and Daniel Williams talk about their cattle operations and explain why LONGRANGE is a good fit.
See Why

Product Description

LONGRANGE is the first extended-release injection that gives up to 150 days of parasite control in a single dose. It lasts longer and works harder than any other dewormer on the market to protect your herd from one season to the next.1,2

For more information, visit theLONGRANGElook.com

Features and Benefits

Better Control, Better Feed Conversion.

  • Conventional dewormers only offer protection for 14 to 42 days.
  • Unique THERAPHASE™ formulation powers LONGRANGE for up to
    150 days.1
  • The only seasonal dewormer with effective plasma levels that remain up to
    150 days.1
  • More control means less parasite interference, and more weight to market.

Works when you need it most.

  • Larvae levels peak weeks after conventional dewormers have quit completely, often requiring multiple treatments.
  • LONGRANGE helps grazing cattle avoid infection through peak larvae buildup.

Effective against even the toughest worms.

  • Brown Stomach Worm (Ostertagia ostertagi)
  • Nodular Worm (Oesophagostomum radiatum)
  • Barber's Pole Worm (Haemonchus placei)
  • Small Intestinal Worm (Cooperia oncophora; C. punctata; C. surnabada)
  • Stomach Hairworm (Trichostrongylus axei)
  • Lungworm (Dictyocaulus viviparus)

Know Your Enemy: More on Parasites
Check the Parasite Pressure on Your Pasture 

Dosage and Safety

Dosage Information

  • Prescription product to be administered subcutaneously at 1 mL/110 pounds.
  • Available in 100, 250 and 500 mL bottle sizes; bottle protectors.

Safety Information 
Caution: Federal law restricts this drug to use by or on the order of a licensed veterinarian. Warnings and Precautions: For use in cattle only, not for use in humans or other animal species. Keep out of reach of children. Not for use in breeding bulls, or in calves less than 3 months of age. Not for use in cattle managed in feedlots or under intensive rotational grazing. Not for use in female dairy cattle 20 months of age or older, including dry dairy cows, or in veal calves. Post injection site damage (e.g., granulomas, necrosis) can occur; these reactions have disappeared without treatment. Not for intravenous or intramuscular use. Do not underdose. Do not treat within 48 days of slaughter.

1Dependent upon parasite species, as referenced in FOI summary
  and LONGRANGE product label. 
2LONGRANGE product label.

Product Resources

Contact Information

  • Boehringer Ingelheim Vetmedica, Inc.

    Cattle Division

    3239 Satellite Blvd NW,
    Duluth, GA 64506

    • Phone 866-638-2226
    • Fax 816-326-9167
    • e-mail

Merial is now part of Boehringer Ingelheim. LongRange and the Cattle Head Logo are registered trademarks, and THERAPHASE is a trademark of Merial. All other marks are the property of their respective owners. BOV-1215-ANTH0418