Beck tended toward extreme caution since the feds were looking for any reason to get him. Most people who have done blood electrification will tell you that herbs are no problem. But chemically sensitive people, like myself, can have problems from doing blood electrification after having been downtown and breathing much auto exhaust. Reasons such as that are why I only use 40 hertz frequency to avoid any electroporation (ie: transfection is a more appropriate word).