Longrange - Available in 500ml, 250ml, and 50ml bottles. Here's something that deserves a good, long look: 100 to 150 days of parasite control in a single dose.

LONGRANGE® (eprinomectin) is the first extended-release injection that delivers 100 to 150 days of parasite control in a single dose,1 thanks to its unique THERAPHASE™ formulation.2 A single spring treatment works long enough to break the parasite life cycle and reduce pasture reinfection.2-4 And that's something conventional dewormers just can't match.5-7

LONGRANGE is worth the investment.

LONGRANGE gives you 100 to 150 days of parasite protection - so you can break the cycle with one convenient spring treatment.2-4 And that's what makes LONGRANGE worth the investment.

To get the same level of control with conventional products, you'd need three or more applications, each one timed to start working before the last one wears off.3-4 When you add up those product costs, labor, handling stress and shrink, one dose of LONGRANGE makes a lot of sense. It's all the body condition, reproduction and weaning weight benefits of a strategic deworming program in a single spring treatment.

Nothing else comes close to the control of LONGRANGE.2,5-7

It takes about 100 days of continuous control to break the parasite life cycle.3,4 But you can see from the chart that conventional dewormers don't work nearly that long.

Only LONGRANGE contains the THERAPHASE™ formulation.2

This unique formulation allows LONGRANGE to go to work immediately and continue to work for an extended period of time.2 This built-in ability to break the parasite life cycle with one spring treatment is only available in LONGRANGE.2-4

Pharmacokinetic studies of LONGRANGE in cattle indicate that effective plasma levels remain for an extended period of time (at least 100 days).2

*Plasma concentrations between 0.5 and 1 ng/mL would represent the minimal drug level required for optimal nematocidal activity.

Cattle producers, contact your veterinarian to order LONGRANGE.
Veterinarians, contact your distributor or call Merial at 1-888-637-4251
option 1, then option 2.

  • 1 Dependent upon parasite species, as referenced in FOI summary and LONGRANGE product label.
  • 2 LONGRANGE product label.
  • 3 Morley FH, Donald AD. Farm management and systems of helminth control. Vet Parasitol. 1980;6:105-134.
  • 4 Brunsdon RV. Principles of helminth control. Vet Parasitol. 1980;6:185-215.
  • 5 CYDECTIN Injectable product label.
  • 6 DECTOMAX Injectable product label.
  • 7 SAFE-GUARD product label.