I saw my PCP ..a few days ago..My b/p has been fine since my surgery.. but he was concerned it was high..140/85..I know it was white=coat B/p/ Leaving home and driving 1 hour and his nurse taking it..with no rest between.. However, with all the stress I have had this summer..helping daughter with 2 new Grandchildren, ect.... I agreed to take a B/p med..this toprol-xl...100 mg..He gave me enough samples for 2 weeks.. took 1 this A.M...drove down and spent a great day with kids..however, got very sleepy coming home.. I read that it is a time-release med..should I take it at night? took my b/p when I got home..130/75 and a pulse of 65.....Any help with this med? Bonnie