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What dewormer should you use in the Spring?

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  • #21
    Thanks for the info... it's almost time to deworm here (still getting down into the 30s at night), and I will look into using Quest.


    • #22
      I find how climate affects worming schedules to be interesting. I'm so far south that our local recommendation for low and moderate shedders is Ivermectin or Moxidectin in October, and then Moxidectin plus praziquantel in January. For us, the heat of the summer kills worms rather than the cold of winter.

      Unless you're me, and you end up double dosing your low shedder with Ivermectin in June for summer sores.


      • #23
        Originally posted by JB View Post
        The problems were both of those - the original plunger locking mechanism kept failing, resulting in overdoses for smaller horses, AND people who hadn't been regularly deworming, or using things with lots of resistance, were suddenly using the big guns on horses who had a high worm load, so there were impaction issues.

        Quest is perfectly safe to use as directed. If your horse has or has had EPM, don't use it (and you might have to be careful with ivermectin too, so...)
        My 25 year old had an EPM episode 3ish years ago. What should she get instead of QuestPlus for spring? Other two who live at home would still get QuestPlus, right?
        "I'd rather have a horse. A horse is at least human, for god's sake." - J.D. Salinger


        • #24
          Some EPM horses have reacted poorly to Quest and invermectrin. There is enough of a pattern of it to be aware. My EPM horse relapses on Quest. He is usually find on Invermectrin and always fine on Panacur. Some EPM horses are specifically wormed with Quest- it’s not a clear cut case of don’t use it, it’s just something to be aware of. I would look at the history of your individual horse’s reaction to wormers then adjust accordingly.


          • #25
            I personally probably would never use Quest on a horse with or who had EPM. Yes, it's the same class as ivermectin, but it's also different enough. Nothing scientific to back it up, just the patterns as mentioned. I'd stick with ivermectin since that's the only other option to kill bots. So that means Equimax (I will never ever recommend Zimecterin Gold to any horse) to also get tapeworms, or you do have the option of double dosing pyrantel pamoate (ie Strongid paste) to kill tapeworms too.
            The CoTH CYA - please consult w/your veterinarian under any and all circumstances. - ET


            • #26
              Our vet recommends fecal testing and Equimax in the spring, and the Panacure Purge (5 day) in the fall. I'm in central CA. I used to use Ivermectin in the spring.