I take one called CoKenzen ( generic Candesartan etc.).
A few weeks ago I changed the time of taking it from morning to evening - thought it might help me sleep better.
Since then I've been up to pee every couple of hours or so during the night.
I went to the GP today and she said yes it's diruretc, take it in the morning. But you can take the betablocker at night.
And my BP was up for the first time in years.
The difference between Wealth Tax, Inheritance Tax and Income Tax
As well as posting about difficulties with my osteoporosis meds on a another thread, I now find my BP is up and BP meds also need changed. 

