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Marquis®

The first FDA-approved EPM treatment combining safety, efficacy and convenience.

Key Benefits

Product performance that offers new hope:

  • Marquis (15% w/w ponazuril) Antiprotozoal Oral Paste offers proven efficacy against equine protozoal myeloencephalitis (EPM).
  • The active ingredient is ponazuril, an anticoccidial compound with cidal activity against Sarcocystis neurona, the protozoal parasite that causes equine protozoal myeloencephalitis (EPM).
  • Ponazuril acts against the parasite at several stages of the lifecycle.
  • Ponazuril crosses the blood/brain barrier to reach the central nervous system (CNS) where it kills the parasite.
  • In clinical efficacy trials conducted at equine referral clinics across the country, Marquis was proven effective at the recommended dose level.
  • Marquis should effectively clear the horse of S. neurona, but may have no effect on irreparable, pre-existing CNS damage caused by the protozoal parasite prior to treatment.
  • The prognosis for animals treated for EPM may be dependent upon the severity of the disease and the duration of infection prior to treatment.
  • Early and accurate diagnosis followed by immediate treatment are critical for best clinical response.
  • Prescribe with confidence
    • Marquis (15% w/w ponazuril) Antiprotozoal Oral Paste offers a wide margin of safety.
    • The safe use of this product in horses used for breeding purposes, during pregnancy or in lactating mares, has not been evaluated.
    • This product is not for use in animals intended for food.
  • Simple administration, shorter regimen
    • Formulated in a low-volume paste that horses readily accept.
    • Administered once a day for 28 days.
    • Simple, low-dose regimen enhances owner compliance.
    • Packaged with four syringe barrels and four reusable plungers with a calibrated dosing ring. Each syringe barrel contains enough ponazuril to treat one 1,200-pound horse for seven days. The package contains a complete 28-day treatment regimen.
  • A combination of safety, efficacy and convenience in one product
    • Cidal activity against Sarcocystis neurona.
    • Reaches central nervous system where damage occurs.
    • Proven efficacy.
    • Wide margin of safety.
    • Low dosage volume.
    • Short therapy duration.
    • Made by Bayer, a world leader of Animal Health products.