My doctor put me on bisoprolol 2.5mg then up to 5mg then found that was too high and wants me back on the 2.5, (half a pill) so I've been taking three quarters of a pill the last two days and I'm having crazy anxiety, palpitations, unable to eat or sleep how long can I expect this to last? I'm supposed to go down to 2.5mg tonight so it should level in a few days right? When is this a "tough it out" vs a "go to the doctor" thing. I have no relief medication for anxiety because I haven't had a panic attack in 10 years until today.