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HorseAdvice.com » Horse Care » Worms, Deworming, Parasite Control » Overview of Deworming » Topics Not Covered Above »
  Discussion on Panacur 5 day - double or single dose?
Author Message
Member:
Frances

Posted on Saturday, Jan 3, 2004 - 12:13 pm:

DrO, I'm confused as to the correct dose of Panacur Equine Guard for encysted dormant larvae. On their website, Panacur do not mention doubling the dose, but say "the standard dose of 7.5 mg/kg should be given for 5 consecutive days." On the other hand, there have been several posts on this site about vets who have recommended a 5-day double dose, and in your Overview of Deworming you refer to "a high dose five day (10mg/kg for 5 consecutive days) treatment of Panacur....", but 10mg/kg is neither standard nor double dose. I'm probably missing something here, but could you straighten me out?

Another query I have about deworming with this product is: since encysted inhibited larvae are not killed by most dewormers, surely even a horse that's been regularly dewormed with other products could have a heavy burden of these particular beasties and therefore be at risk of colicing the first time just from the die-off?

Thanks for your time!
Moderator:
DrO

Posted on Sunday, Jan 4, 2004 - 9:50 am:

There are several published techniques for using Panacur in this manner. You have just run across two. That may be considered a standard dose by Pfizer but a commonly published dose for the active ingredient is 5 mg/kg, hence the term double dose for 10 mg/kg. You should use the Panacur according to the label.

The number of encysted larvae is a function of the number of new larvae the horse is exposed to on the pasture. Regular deworming with any of our programs keeps the number of new larvae on the pasture around 0, hence there should also be no (or minimal) encysted larvae, all of this is explained in greater detail in the overview article.
DrO
Member:
Frances

Posted on Monday, Jan 5, 2004 - 2:26 pm:

Many thanks, DrO, for your prompt reply. Using the Panacur according to the label is what I shall do, when I get the courage to do so.

My horse is at a barn where deworming is done only every 5 or 6 months. I am really concerned about this and, after a rather heated discussion with the barn manager, have been told I can deworm my own horse as I like, but that it is unnecessary to deworm any more ofter than she does as the horses are all shiny and good-doers (this is true, they are).

I fully realise that unilateral deworming is not the solution, but it's all I can do at present. Obviously my horse IS exposed to larvae, and this is why I'm a bit nervous about using the Panacur 5-day. I'm also not too sure about moxidectin at this point. The last two dewormings have been with Strongid P, and I (though only I) double-dosed the last time for tapes. This was 3 weeks ago. The year before, we were using Eqvalan, and my idea for this year is to go back to this every two months, and try the Panacur 5-day in spring, if you think it sounds safe?

(I don't think Strongid C pellets are available here, and couldn't be sure they were given every single day anyway.)

I'd be grateful for your advice in a far from ideal situation.
Moderator:
DrO

Posted on Monday, Jan 5, 2004 - 8:44 pm:

Fecal samples taken according tot he instructions in the article will go a long way toward assessing your situation and directing your deworming program.
DrO
New Member:
theflyingmumstnyrrcom

Posted on Wednesday, May 22, 2013 - 5:05 pm:

Am new to this altogether. Was suggested to give our 13 yr old TB mare a five day Panacur PAC. She hasn't been dewormed since the fall, and has lost a lot of weight...could be the problem. We're giving her lots of calories and added vitamins to her pellets. She also gets hay. Have added beet pulp to her diet as well. (soaking it first) Does anyone have any advice for me??
New Member:
carolynh

Posted on Wednesday, May 22, 2013 - 6:08 pm:

Welcome Deborah, I am also new (to posting) I have been a member for several years, but did not have a full service membership until now.
My thoughts are: Have you had a fecal sample analyzed by your vet, to be certain your mare has parasites? Have you had her teeth checked, to see if she needs dental work?
I think the current protocol, as suggested by Dr. O, is to administer anthelmintics to your horse only when they have tested positive for worms,due to the growing parasite resistance to wormers. Good luck with your mare.
Moderator:
DrO

Posted on Thursday, May 23, 2013 - 6:46 am:

Welcome and welcome back guys,
Carolyn is right, it would be a good idea to get a fecal float run on the horse to see if this might be the problem.

Deborah we have an article that covers this problem in detail at HorseAdvice.com » Diseases of Horses » Colic, Diarrhea, GI Tract » Weight Loss in Horses » Overview of Chronic Weight Loss. After reading the article if you have any questions you can post them in the discussion there. However be sure to start your own discussion rather than add to the bottom of someone elses' post. Thanks, it helps keep us organized. One other thing Deborah, if you would like to change the way your name appears in your posts you can do that within your profile.
DrO
New Member:
theflyingmumstnyrrcom

Posted on Friday, May 24, 2013 - 8:00 pm:

Many thanks to both Carolyn and Dr. O!
I will definitely get a fecal sample analyzed. It has been hard to sort out all the info I've received from well-meaning horse owners.
Yes, I do have an appt set up to have Nellie's teeth checked.
I appreciate your help, and I will check out the articles you suggested, Dr. O. Again, thank you!!
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