I use to take cartia xt 120 MG once a day . But I wasn't feeling good so Dr change Me to metropolol 12.5 MG twice a day according to him is a small doze . Cause I'm to sensative to side effects. After weeks of taking it I mention to him last week that my blood pressure n pulse are always high ..so he advised me to start taking 25mg 2 timed per day total 50mg ..I noticed it slowed down my pulse always under 80bpm and blood pressure around 110 over 80 but most of day 130 over 80 ..but for some reason I felt like a new person..tired exhausted feeling ill like a rush of blood to my head feeling very bad when driving overwhelmed felt bad cabt explained.. I try for 3 days and felt awful..I went back to old dosage now im.bavk to my old self Why ?? I feel this dr don't care cause he just advised me to go back drinking other dosage..can ge give me something else?? On long run can my heart get more damage for hig blood pressure?