Compare Dulcolax vs. Metamucil

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

Dulcolax (Bisacodyl)

Over-the-counter

Metamucil (psyllium)

Over-the-counter
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.

Metamucil (psyllium) is a natural fiber that is cheap and effective at relieving constipation.

3.8/ 5 average rating with 454 reviewsforMetamucil
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.
  • Inexpensive and available over-the-counter.
  • Made from a natural product.
  • Using Metamucil (psyllium) has multiple benefits, including relieving constipation, lowering cholesterol, and making you feel full.
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.
  • Metamucil (psyllium) can take up to 72 hours to relieve constipation.
  • Not the best choice for people who have swallowing problems or can't drink lots of liquids.
  • Metamucil (psyllium) can cause gas and stomach cramps.
Used for
Dosage forms
  • Pill
  • Suppository
  • Pill
  • Powder
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
454 reviews so far
71%
saidit'sworth it
45%
saiditworked well
10%
saidit'sa big hassle

Have you used Metamucil (psyllium)?

Leave a review
Side effects
The Dulcolax (Bisacodyl) FDA package insert doesn’t have numbers about how common side effects are.
The Metamucil (psyllium) 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
  • Blockage of small or large intestine
    • Age 60 or older
    • Cancer
    • Taking medicines that cause constipation
    • Limited liquid intake
  • Choking
    • Limited liquid intake
    • Swallowing problems
  • Serious allergic reaction
    • Hypersensitivity to psyllium
See more detailed risks and warnings