"I once developed a case of my pulse regularly shooting to160per minute,after a long and frusterating medical exercise cardiologists,blood tests etc no cure was found for 4 years, luckily read a book called..vitamin therapy,, by a doctor in usa named Dr.Lesser and found vivioptal just after using it for a week the symtoms vanished and till yet after 27 years never appeared,have used this vitamin on and off to this day."