Hi prof,
Miralax is very safe to take daily. I used to take 4 capfuls daily for over 3 years until I had my colectomy last year. Did your dr prescribe it or are you taking it on your own? If you are taking it on your own, just take the recommended dose; if it doesn't work, ask your dr how much to use.
I wish you the best and hope it works for you.
Judy