Equistrength Recall

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Questions & Answers

Side Effects & Adverse Reactions

There is currently no warning information available for this product. We apologize for any inconvenience.

Legal Issues

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FDA Safety Alerts

There are currently no FDA safety alerts available for this drug.

Manufacturer Warnings

There is currently no manufacturer warning information available for this drug.

FDA Labeling Changes

There are currently no FDA labeling changes available for this drug.


INDICATIONS:  For the removal and control of mature infections of large strongyles (Strongylus vulgaris, S. edentatus, S. equinus); small strongyles; pinworms (Oxyuris equi); and large roundworms (Pasascaris equorum) in horses and ponies.

Consult your veterinarian for assistance in the diagnosis, treatment, and control of parasitism.


There is currently no drug history available for this drug.

Other Information

EQUISTRENGTH Paste (pyrantel pamoate) is a pale yellow to buff paste containing 43.9% w/w pyrantel pamoate in an inert vehicle.  Each syringe contains 3.6 grams pyrantel base in 23.6 grams paste.  Each milliliter contains 171 grams pyrantel base as pyrantel pamoate.


COMPOSITION:  Pyrantel pamoate is a compound belonging to a family classified chemically as tetrahydropyrimidines.  It is a yellow, water-insoluble crystalline salt of the tetrahydropyrimidine base and pamoic acid containing 34.7% base activity.

The chemical structure and name are given below:

Chemical Name:

(E)-1,4,5,6-tetrahydro-1-methyl-2-[2-(2-thienyl)-vinyl]-pyrimidine 4,4' methylenebis [3-hydroxy-2 naphtholate] (1:1)

Equistrength Manufacturers

  • Aspen Veterinary Resources
    Equistrength (Pyrantel Pamoate) Paste [Aspen Veterinary Resources]
  • Aspen Veterinary
    Equistrength (Pyrantel Pamoate) Paste [Aspen Veterinary]

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