Where are you located? I am in "Northern California" as well. Should be able to find a reptile vet close by.Sadly this is the best vet in my area
I understand your concern if the medication killing off the good bacteria. You share a valid opinion that I agree with. I will ask my vet the specific details of these parasites.
@Markw84
Deadhead vet has been banned from the site for some reason. He seems to think the ban is permanent from what he told me. Hence, he will not be able to make comments on any threads for the foreseeable future.
If you're interested, here's a few from our vet list. I don't know these personally, but worth a call to see if maybe a better tortoise experienced vet:I live in the bay area near San Francisco. San Mateo county