I want to know how to wean off ziac. Ziac is a combination of bisoprolol(beta blocker) and hydrochlorathiazide. I'm currently on 2.5 mg/6.25 mg. which is the lowest dose. What would be the best way to wean off, cut it in half and take for five days or take one pill every other day for five days. I've heard of people doing it both ways and didn't know which would be the best.