While I was waiting for the vets reply, I did some research and no matter whether they're hookworms, roundworms, nematodes, etc the drug named Panacur C (fenbendazole) is a broad spectrum anti-microbial which will kill them all. And it's inexpensive. So I'll check it out at Petco tonight or 1-800- petmeds.
You're right they can be bred in captivity. The female lays about 8000 eggs and the time-period between egg, tadpole and toadling is very short to coincide with the short rainy season in the Sonoran Desert. As for the other matter, you don't need to synthesize the drug, their body does. Their parotid glands produce a venom (bufotenin) and an hallucinogen (DMAE or something like that) thats then smoked. The "toad licking" stories you've probably heard about are BS spread by the media and law enforcement. Anyway, toads are one of the few pets not banned in NYC. And they eat out of my hand, so I'm keeping them. They're really cute and only cost me $50 each (1 male & 1 female).