I have had ice cold feet ever since I went hypo. My endo put me back on my beta blocker but increased it from 60 mg daily to 80 mg daily. The phamplet that came with it says, this drug can cause your extremities to get cold. But if I stop taking this drug my heart will race faster ( it goes over 170), my heart will beat irregular, my jerks gets worse. Do all beta blockers cause cold extrememties or just this one? I need this med for my heart . I can always wear 20 pairs of socks but a new heart?