Compare Miralax vs. senna

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

Senokot (senna)

Over-the-counter
Helps get things moving.

Miralax (Polyethylene Glycol) provides effective relief of constipation without "cramping" your style.

4.0/ 5 average rating with 226 reviewsforMiralax
Relieves occasional constipation.

Senokot (senna) is gentle and effective for occasional constipation, but it can't be used as a long-term treatment.

3.4/ 5 average rating with 69 reviewsforsenna
Upsides
  • Miralax is the most recommended laxative by pharmacists and doctors.
  • Most people felt it was worth the hassle.
  • It's gluten and sugar free.
  • It causes little to no cramping, bloating, gas, or feelings like you "have to go right now" compared to some other medicines to treat constipation.
  • Works differently than other over-the-counter laxatives so it's a great alternative if other medicines haven't worked.
  • Senokot (senna) is tolerated well and has few side effects.
  • Approved for children as young as 2 years old.
Downsides
  • You have to dissolve Miralax in a beverage and drink it versus taking a pill.
  • It's not for children 16 years or younger.
  • Miralax doesn't work overnight. It can take up to 2-4 days to have a bowel movement.
  • It's not recommended that you take it for more than a week, so it you haven't had any success, you'll need to call your doctor for other laxative options.
  • Using Senokot (senna) often or for a long period of time can increase the risk of dehydration, especially if you are older or also taking diuretics.
  • Might take a few days to work which is slower than some of its alternatives.
  • Can only be used as a short-term treatment.
Used for
Dosage forms
  • Liquid
  • Pill
  • Chewable tablet
  • Liquid
Price
No pricing information available
Want to save even more money?
Sign up now for a 30-day trial and save up to 95% at CVS, Kroger, Albertsons, and other pharmacies.
Reviews
226 reviews so far
75%
saidit'sworth it
54%
saiditworked well
10%
saidit'sa big hassle

Have you used Miralax (Polyethylene Glycol)?

Leave a review
69 reviews so far
58%
saidit'sworth it
35%
saiditworked well
10%
saidit'sa big hassle

Have you used Senokot (senna)?

Leave a review
Side effects
The Miralax (Polyethylene Glycol) FDA package insert doesn’t have numbers about how common side effects are.
The Senokot (senna) FDA package insert doesn’t have numbers about how common side effects are.
Risks and risk factors
  • Electrolyte imbalance
    • Taking with medications that cause electrolyte imbalance
    • Age 60 or older
  • Risk to fetus
    • Women of childbearing age
  • 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
  • Bowel blockage
  • Laxative dependence
See more detailed risks and warnings