I have a page on the main enduranceridestuff.com website that is on the topic of worming horses:
http://enduranceridestuff.com/HorseWormingInfo.html
I will go ahead and copy that info here so that it will be easier for people to find. I get a lot of questions about this. One of the most commonly asked questions relating to the 5 day horse worm purge is “how do I figure out the correct dosage?”.
To begin with, the recommended dosage to worm a horse with fenbendazole is 2.5 cc per 100 pounds of body weight orally.
So….if your horse weighs 1000 pounds that would be 25 cc for a regular dose of fenbendazole wormer (10 x 2.5). Now since we want to double dose the horse with this for five days we will actually be giving a 50 cc dose each day. It’s real easy to figure out by going to Google and typing in: 50 cc = ?tbsp. Here is the answer.
To make it even easier, I’ve done the work for you and have calculated how many tablespoons of the liquid fenbendazole wormer to give daily for five days (this is the double dose amount) for various weights of horses. I use a tablespoon to measure mine out since I mix it into the horses feed. You can also use a 60 cc sized electrolyte or dosing syringe and administer the correct dosage of CC’s that way as well. My horses have no problem eating it right up if I mix it in with a little soaked beet pulp and complete feed.
| Weight of Horse |
Tbsp. Daily x 5 days |
# CC’s |
| 800 |
2.71 |
40 |
| 850 |
2.87 |
42.5 |
| 900 |
3.04 |
45 |
| 950 |
3.21 |
47.5 |
| 1000 |
3.38 |
50 |
| 1050 |
3.55 |
52.5 |
| 1100 |
3.72 |
55 |
Liquid Fenbendazole for doing a worm purge on your horse can be purchased from KV Vet at this link, or from Valley Vet Supply at this link. You can also buy it packaged in a five dose syringe pack for the purge worming. It costs a lot more that way!
I’ve been using the liquid form of fenbendazole for years and do at least one five day purge on my horses per year. I can purge worm three or four horses with one bottle and still have enough left for some individual wormings later. That cuts my cost down by about 50% of the cost of purchasing it packaged the other way. Click here to see the cost of purchasing it packaged for the purge. Continue reading Horse Worm Purge Info – Save Some $$ – Including How to Figure Dosage
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