I'll try and see if I can get some Vitamin A when I consult the Vet soon.
Update:
Just placed Thermidor in quarantine, a 5 gallon. I have another that I'm going to set up tomorrow for Levi. As for Thermidor, he's skinnier than normal but relatively far off from bone skinny, which is a good sign. Very active, eats a lot, and his tongue is definitely getting better. Still going to quarantine him and get that fecal done though. Here's an image of the quarantine tank, sorry if it's bad quality, I took it a few minutes ago and it's late evening for me.
He is truly a gorgeous frog in my eyes...
Unfortunately, talked to my friend who often visits the Exotic Vet nearby my house (Her family runs an Animal Rescue) and it apparently might cost 50-75$ for a fecalwhich is kind of shocking, considering I expected more in the 20$-30$ range.
Once that's done, the meds shouldn't cost too much, if anything at all. Bumpy and Gnag's medications (Panacur for Bumpy, liquid Calcium for Gnag) were given to us for free since the amounts were so miniscule, and since Thermidor is less than 2 inches snout to vent, I have no doubt these medications will cost close to nothing. However, how we'll give him the meds is difficult. I cannot forcefeed him due to his tiny size so I'm thinking the 'Drop of Medication onto Back' or a bath of some kind will have to do it. Whether it's parasites or simply a bacterial infection, I'll give the same treatment for Levi since he's his tankmate and completely clean out their 20 gallon, sterilize the contents of it that I can and throw out everything else. If the fecal isn't too expensive, I might get Bumpy tested too, but I'll save that for when I'm done with
I'm going to phone up the Vet tomorrow or whenever I can and ask how much a Fecal Exam for a very small frog would be. Hopefully, it's not too expensive. If it is, I'll find a way around it. Glad I've got this underway and that Thermidor's still in somewhat good condition.