Compare Dulcolax vs. Fibercon

Head-to-head comparisons of medication uses, side effects, ratings, and more.

Treats constipation.

Dulcolax (Bisacodyl) works fast and the suppositories work even faster to relieve your constipation, as long as you're okay with it "cramping" your style a bit.

3.8/ 5 average rating with 160 reviewsforDulcolax
Helps get things moving.

Fibercon (Calcium Polycarbophil) is a natural fiber laxative that's safe enough to take during pregnancy. Just make sure you take it with plenty of liquid.

3.0/ 5 average rating with 80 reviewsforFibercon
Upsides
  • Most people said it was worth taking and it wasn't too much of a hassle.
  • Tablets give overnight relief of your constipation.
  • Dulcolax can also be used to treat constipation caused by spinal cord injury.
  • Suppositories give you quick relief without having to drink a large amount of liquid medicine.
  • Some people felt Fibercon was a hassle but still worth it.
  • It's safe to use short-term during pregnancy and breast-feeding as long as you take it with plenty of liquid, but you should still check with your baby doctor first.
  • Less gas and bloating compared to psyllium laxative products.
Downsides
  • Dulcolax can cause cramping, stomach upset, feeling faint, and the feeling that you "have to go right now".
  • You have to be comfortable with putting the medicine in your rectum.
  • Suppositories can cause slight rectal burning.
  • You may have to take Fibercon daily for 1-3 days to see full effects.
  • If you don't take it with enough liquid, it could swell and block your throat and cause choking.
  • Not the best choice for people who have swallowing problems or aren't able to drink lots of liquids.
  • Can cause heartburn, gas, and belly cramps.
Used for
Dosage forms
  • Pill
  • Suppository
  • Pill
No pricing information available
No pricing information available
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Reviews
160 reviews so far
65%
saidit'sworth it
49%
saiditworked well
16%
saidit'sa big hassle

Have you used Dulcolax (Bisacodyl)?

Leave a review
80 reviews so far
45%
saidit'sworth it
28%
saiditworked well
21%
saidit'sa big hassle

Have you used Fibercon (Calcium Polycarbophil)?

Leave a review
Side effects
The Dulcolax (Bisacodyl) FDA package insert doesn’t have numbers about how common side effects are.
The Fibercon (Calcium Polycarbophil) FDA package insert doesn’t have numbers about how common side effects are.
Risks and risk factors
  • Bowel blockage
    • Age 60 or older
    • Malignancy
    • Other condition that causes blockage or narrowing of bowel
    • Taking medications that cause constipation
  • Laxative dependence
    • Age 60 or greater
    • Taking medications that cause constipation
    • People who can't walk or move well (immobility)
  • Risk to fetus
    • Women of childbearing age
See more detailed risks and warnings
  • Drug interactions
    • Taking with calcium supplements
    • Taking with oral bisphosphonates
  • Bowel blockage
    • Age 60 or older
    • Malignancy
    • Other condition that causes blockage or narrowing of bowel
    • Taking medications that cause constipation
See more detailed risks and warnings