Originally Posted by dallas
the best first thing to do is use the Power Pak working -its a five day dose that is doubled - you give one tube per day for five days- migrating larva will cause exactly what you describe with the loose stool=gas and sometimes colic- its totally safe and the horse will be much healtier-
Panacur Powerpac is far from the first thing to do. An assessment of diet and management practices would be the first thing to do if you have a chronic issue. Some horses just like some people have more sensitive GI tracts or they can actually be allergic to common feedstuffs. And some feedstuffs are known for causing excessive gas and diarrhea like rice bran.
Next would be a discussion of your deworming program with your vet. If you are on a good deworming program, parasitism isn't the likely cause of the gas and diarrhea.
If you aren't on a good deworming program, Panacur Powerpac is NOT what I would recommend to try to treat for encysted strongyles because far from being "the safest" we now know that it actually causes severe inflammation and even ulceration of the GI tract
. A better choice if you are trying to treat for encysted strongyles (which is what Panacur Powerpac is specifically used for rather than migrating parasites) is moxidectin because it is as effective without causing inflammation/ulceration of the GI tract and it does it in a single dose--easier to do and much less expensive.
Chronic bacterial infections can also cause flatulence and diarrhea, so having a culture of the feces done will help to determine if that is the problem or to rule it out.