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Strongid Paste Wormer

Strongid® Pyrantel Paste

Strongid® Paste Dewormer from Zoetis (formerly Pfizer) is an FDA-approved equine dewormer. Approved for the removal and control of mature infections of large strongyles, pinworms, large roundworms, and small strongyles in horses and ponies.


Item # X1-2211
Dover's Price:
$ 7.99
List Price: $11.95
Availability: In Stock
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Strongid® Paste Dewormer from Zoetis (formerly Pfizer) is an FDA-approved equine dewormer containing the active ingredient pyrantel pamoate (43.9%). It is approved for the removal and control of mature infections of large strongyles (Strongylus vulgaris, S. edentatus, S. equinus); pinworms (Oxyuris equi); large roundworms (Parascaris equorum); and small strongyles in horses and ponies. One convenient disposable 20 mL syringe treats 1,200 pounds of body weight. The syringe is marked in four weight increments of 300 pounds. Administer the required dosage based on weight in a single dose to adult horses, ponies and foals over the age of two months. Exercise caution when dosing foals, young and miniature horses, as overdosage may result in serious adverse reactions. Pyrantel is a compound from the tetrahydropyrimidine class.

Strongid® Paste Wormer

Dosage and Administration:
  • This horse wormer paste is to be administered as a single oral dose of 3 mg pyrantel base per pound of body weight. The syringe has four (4) weight mark increments. Each weight mark indicates the recommended dose for 300 pounds of body weight.

  • Position screw-gauge over appropriate mark on plunger. (Each mL contains 180 mg pyrantel base as pyrantel pamoate.)

  • For maximum control of parasitism, it is recommended that foals (2 to 8 months of age) be dosed every four (4) weeks. To minimize the potential source of infection that the mare may pose to the foal, the mare should be treated one (1) month prior to the anticipated foaling date followed by re-treatment 10 days to two (2) weeks after birth of foal. Horses and ponies over eight (8) months of age should be routinely dosed every six (6) weeks.

  • After removing the cap, the paste should be deposited on the dorsum of the tongue. Introduce the nozzle end of the syringe at the corner of the mouth. Direct the syringe backwards and depress the plunger to deposit the paste onto the tongue. Given in this manner, it is unlikely that rejection of the paste will occur. Raising the horseƆs head sometimes assists in the swallowing process. When only part of the paste has been used, replace the cap on the syringe nozzle.
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