It's interesting that you mention panic there. Most of my parasite problems, too, are about central nervous system. Oh, and about the shortness of breath the therapist said that it really is diphyllobotrium latum (tapeworm) that is causing it.
About these natural things she said that only one of her patients have gotten well by taking them only. All the others have taken at least 5 days of fenbendazole (when roundworms only) or 7 days fenbendazole + 5 days niclosamide (when roundworms and tapeworms). And she has prescribed these to very sick people and to little children so I guess they cant be that dangerous when they are taken for such a short time.
For smaller parasites she uses zapping. I dont know why she doesnt use some of the stronger herbs you mention, might ask her about it.