Hi, do you know how soon Can you worm a horse again After being wormed? I wormed my horse 10 days ago with panacur équine Gard( name in Europe) but my horse has also pinworms now. I should worm again with pyrantel but i do not know if it IS too close one cure from thé other one. Any suggestions ? Tia
In the past for different issues my vet has had me do weekly deworming. However, it was with the same one each consecutive week. I don’t see why, in a healthy animal, you couldn’t do different ones 10 days apart, but I would be calling my vet to double check.
May i Know why weekly deworming?
If I recall it had to do with summer sores or a particular parasite in his lower eyelids and we couldn’t treat topically due to location. So he got a full tube (1250# dose for 1000# horse) of Ivermectin paste once a week for 4 weeks.
Panacur-anything is fenbendazole. If you used a single dose, it was likely wasted, as there’s very high and widespread resistance with strongyles. Even if it was a 5-day double-dose “power pack”, it’s still likely to be less effective than moxidectin when it comes to encysted strongyles.
That said, it’s also a “mild” dewormer in terms of the horse, and it’s safe to use anything after it, even days.
If you have pinworms, the first thing I’d try is ivermectin to see if that takes care of them. If it doesn’t, or you don’t want to do that, then use a double dose of fenbendazole. If the pinworm issue is large enough, you may need to do that double-dose every 2 weeks until they are really gone.
If you have botflies, and haven’t targeted them in over 6 months, then I would go with ivermectin (with praziquantel if you also have a tapeworm population) and see if that works first. If not, then do the above double dose fen protocol
Weekly use of ivermectin really is a special case and yes, habronema (what causes “Summer sores”) is definitely a case for that, which is very different from targeting internal parasites.
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You think ivermectine IS better than pyrantel for pinworms ?
It’s not necessarily better. There is definitely a resistance issue there, and I have no idea what that risk is in your area.
BUT, if you still need to target bots, you need ivermectin anyway, so you might as well use that and see what it does for the pinworms. If it doesn’t resolve the issue, then you will need to go with the double fen anyway.
But if you find the ivermectin DOES kill the pinworms, then you avoid the double fen.
As little as possible, as much as necessary 
