@viola2 if what @pami suggests doesn’t work, try Metamucil - or generic psyllium fibre found in health food stores which is cheaper than Metamucil. If you take generic psyllium fibre make sure it is the whole husk kind, not the very fine psyllium powder, which gels immediately, even before you get to drink it. I take two tablespoonsful a day, but I suggest you start with a teaspoonful and work your way up to two tablespoonsful. It takes two or three days to work.

What @pami suggests sounds more pleasant, but I find the psyllium fibre works best for me. Eating six prunes a day, however, would be more convenient, and definitely a more convenient and pleasant alternative to Metamucil/generic psyllium fibre or Miralax (Restoralax in Canada).