Sqwertz <[email protected]> wrote:
> Can somebody explain this to me?
>
> "The human stomach presents a mild acidic environment due to the
> presence of HCl. Polycarbophil absorbs about ten times its own weight
> of water under acidic conditions, but the swelling ratio markedly
> increases at above pH 4.0 and reaches 70 times the initial weight
> under pH-neutral conditions."
>
> 10 times it's own weight under acidic conditions. But 70 times it's
> weight under completely neutral conditions? So that's implying that
> it should swell up 70x using ordinary water.
>
> But when I put 2 pills (equal to 10 grams of polycarbophil) into a
> small dish of 1/4 cup water (60 ml), they just dissolved and didn't
> absorb anything. IOW, they did not noticeably swell. The solids sunk
> to the bottom and there's still a bunch of plain water on top. So I
> added vineger, and still nothing.
>
> Are these fiber pills just a scam? Because they sure as hell ain't
> bulk-forming. And I don't notice any difference when taking them.
>
> -sw


Looking at the first sentence of the Wiki article it is considered a drug.

I looked at a number of soluble fiber supplements a while back but I never
heard of this stuff. But it should expand:

From Drugs.com:

How should I take polycarbophil?
Use this medication exactly as directed on the label, or as prescribed by
your doctor. Do not use it in larger amounts or for longer than recommended.

Take this medicine with a full glass (8 ounces) of water or other liquid.
The tablet may expand in your throat and cause you to choke if you do not
use enough liquid to help swallow the pill. Unless you need to restrict your
fluid intake, drink plenty of fluids each day while you are taking
polycarbophil.
The chewable tablet must be chewed before your swallow it.

Older adults may be more likely to choke while taking this medication. Be
sure to drink a full glass of water while swallowing the regular tablet, or
after chewing the chewable tablet.
Polycarbophil is usually taken up to 4 times per day. Do not take more of
this medicine than recommended by your doctor or printed on the medicine
label.

Polycarbophil should cause you to have a bowel movement within 12 to 72
hours. Call your doctor if your constipation does not improve after 3 days
of taking this medication.

Do not take polycarbophil for longer than 7 days unless your doctor tells
you to. Overuse of a laxative may cause damage to the nerves, muscles, or
tissues in your intestines. Store polycarbophil at room temperature away
from moisture and heat.

Read more -
http://w.po.st/share/entry/redir?pub...arer=copypaste