Has anyone ever tried Essiac extract for parasites.

I'm starting a new parasite cleanse tomorrow with Essiac extract, the zapper and homeopathics. I'm a little worried about what I've read about the Essiac extract stimulating the nervous system.I'm very chemical sensitive and have off and on anxiety and nervousness and the last thing I need is to be stimulated.Has anyone used this and had any bad side effects or reactions to the nervous system? Although I'm sure if it kills the parasites or riles them up it will definately affect my nervous system anyways. Is there anything that can help counteract this reaction? Thanks. Joyce Tweet