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This is a discussion on Worming within the Horse Health forums, part of the Keeping and Caring for Horses category
  • Horse gets diarrhea after worming
  • Horse diarrhea after worming

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    10-02-2010, 04:53 PM

I got my thin horse in August. I wormed him then with Ivermectrin.

I want to worm him again with Pyrantel Pamoate. My vet's website recommends a double dose. Is that all at once or with some time in between?

This is the recommendations from the website:
This schedule is recommended for the Northeastern United States for horses not on a continuous deworming program.( I.e. Daily Strongid C 2X):

January-Ivermectin/praziquantel combination (Equimax)

March-Oxibendazole (Anthelcide)

May-Moxidectin (Quest) ( Use in horses only. We do not recommend using in miniature horses or ponies.)

-Ivermectin (Equell) for miniature horses and ponies

July-Double dose Pyrantel Pamoate (Strongid)

September-Ivermectin/Praziquantel combination (Equimax)

November-Double dose Fenbendazole (Panacur) This can be repeated for 4 more days if horse is showing signs of small strongyle infestation (poor coat, chronic colic, diarrhea, unthrifty)
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    10-02-2010, 04:56 PM
That DEworming schedule seems a little excessive. I would personally go with the AAEP's recommendations and always base treatment off of a fecal egg count.
    10-04-2010, 08:57 AM
I agree with tealamutt.

And yes, it is deworming not worming.
    10-04-2010, 08:59 AM
Yup-agree with the above. Fecal count is the only way to effectively DEworm.
    10-05-2010, 02:37 PM
I agree with the above. Test to see if the horse even needs to be dewormed.

Also. THERE IS A CORRECT TIME to deworm also. Ivermectin should be given after the first hard frost or better yet freeze. Giving it before it will be ineffective or less effective. Then again in June/July

Past those 2 times a year you need to test then rotate CLASSES not just brands. Normally for the July deworming I do not use Ivemectin but a double or triple dose of anouther products/Class.

People forget when the vaccinate and deworm that timing is just if not more important then doing it in the first place. If not done at the correct time of the year it will not work as well.

Also over doing it (deworming) is causing resistance. Iveemectin is not as effective as it once was. This is why you REALLY NEED to test to even see if you need to de worm you horse. I know I typically only deworm about 2 maybe 3 times a year.
    10-13-2010, 06:01 AM
Using something effective against all worms and bots such as an ivermectin product twice a year is a good practice. Depending on your climate, April - May, just before bot larvae leave a horse's stomach would be a good time to use the bot dewormer.

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