Never was told how to take them. Instructions where I read says take 2mgs Doxazosin, bottle says 1, twice daily. other areas I read says take 2mgs at one time. It appears to me I need more as my BP at times runs very high, the other night at 217/92. Also I was never told whether to take Atenolol along with the Doxa. When my heart rate is low (48-59) my BP is higher, if my HR is 60-63 my BP is lower. I am very confused.