I'm having this exact same issue. To give you a little back story.
My bearded dragon will be 8 months old on July 17th. Last month we have been noticing smelly and irregular poops(runny - diarrhea) unlike he was having before(soft and firm in shape).
We took a fecal sample to get tested and the vet said he had high counts of coccidia. We were provided with .03 mg of Toltrazuril. 3 days on, 3 days off, 4 days on.
After the treatment, it has been now almost two weeks completely off and he has been eating up to 5 crickets a day...some times none(maybe a bite or two of salad including collard greens, bok choy and green pepper).
He is also
drinking and pooping every second day.
I have been reading on here and other forums that they are supposed to take probiotics such as acidophilus+. while on medication and it was failed to be mentioned.
I am in PEI, Canada. I was able to find
http://www.probaclac.ca/traveler-formula. No pet stores or pharmacies sell liquids or anything of such for this kind of problem. I am also unable to locate soy yogurt with no sugar added
The first one has no dairy products while the second has been in contact with milk and Silica(I had read this shouldnt be given to beardies)
I also recently ordered
http://www.bug-de-lite.com/store/index.php?app=ecom&ns=prodshow&ref=Acidophiliz so i'm trying to see if I can get my baby back. He's just not the same with his eating since taking medication for the parasites.
I'm not giving up. I'll keep you updated.