MY DAD IS IN HIS LATE 60'S AND IS HAVING AN AWFUL TIME WITH HIS BP. HE WILL NOT GO TO A DIFFERENT DOCTOR. MY MOM AND I HAVE TOLD HIM HE NEEDS A SECOND OPINION. HIS BP RANGES AROUND 186/150 MOST OF THE TIME AND ALL THAT THE DOCTOR HAS DONE IS CHANGE HIS MEDS. HE ONLY HAS ONE KIDNEY SO, I KNOW HE CAN ONLY TAKE CERTAIN KINDS. PLEASE IF ANYONE HAS ANY IDEA HOW I CAN HELP PLEASE LET ME KNOW.