I hit "send" before adding that, when you use a fiber lax like Metamucil, you also get 8 ounces of your water in for the day.
I hate the stuff. The taste, the texture, ugh, grosses me out. So I try to get it down fast on an empty stomach. Then I swish the remainder with more water until the glass is clean and drink that.
As you may know (or not want to know), my first BM after surgery was huge and painful and took 24 hours to complete. This could have been avoided if I'd known about the benefit of fiber lax.
There are actually a lot of benefits to fiber lax, including scientific studies indicating a lowering of cholesterol.
And as Wazzu noted, we're talking about psyllium husk, and you can buy this cheap at many stores. Don't pay for psyllium that's been dolled up with artificial colors and flavors.
You can also add unflavored psyllium to cereals and soups, but it will make them thicker, so be mindful and compensate.
Anything you can do to make the process easier, do it. I was bearing down so hard, i was afraid I'd bust my staples.