Compare Imodium vs. Rolaids

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

Treats diarrhea.

One day is too many days to have diarrhea. Having Imodium (Loperamide) on hand to relieve your symptoms can be a life-saver.

4.2/ 5 average rating with 285 reviewsforImodium
Relieves heartburn and acid tummy.

Rolaids (Calcium Carbonate / Magnesium Hydroxide) gives quick relief for heartburn, but don't expect it to last all day.

3.7/ 5 average rating with 1089 reviewsforRolaids
Upsides
  • Most people who take Imodium feel there's no hassle and it's definitely worth it!
  • Non-habit forming and available over-the-counter.
  • It comes in caplets, liquid, and chewable tablets so you can use it anywhere you need it.
  • Imodium is used for short-term, chronic and traveler's diarrhea. It's also used for people who have diarrhea caused by cancer or certain medicines that treat cancer.
  • Works really fast.
  • Available over the counter without a prescription.
  • Cheap.
Downsides
  • Imodium only treats your diarrhea symptoms. Diarrhea may be caused by a number of conditions and will need specific treatment that deals with the underlying issue.
  • Studies in people taking Imodium for chronic diarrhea showed if the maximum number of doses didn't relieve symptoms in 10 days, then it probably won't work for that condition. You can talk to your doctor about other treatment options.
  • Doesn't last very long.
  • Other antacids like Zantac (H2 blockers) and omeprazole (proton pump inhibitors) can work better and last longer.
  • Some chalky aftertaste.
Used for
Dosage forms
  • Pill
  • Chewable tablet
  • Liquid
  • Chewable tablet
  • Liquid
Price
No pricing information available
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Reviews
285 reviews so far
89%
saidit'sworth it
65%
saiditworked well
6%
saidit'sa big hassle

Have you used Imodium (Loperamide)?

Leave a review
1089 reviews so far
75%
saidit'sworth it
37%
saiditworked well
7%
saidit'sa big hassle

Have you used Rolaids (Calcium Carbonate / Magnesium Hydroxide)?

Leave a review
Side effects
1possible side effects
  • Constipation
    3%
See more detailed side effects
The Rolaids (Calcium Carbonate / Magnesium Hydroxide) FDA package insert doesn’t have numbers about how common side effects are.
Risks and risk factors
  • Allergic reactions
    • Allergy to loperamide
  • Driving impairment
    • Taking with alcohol
    • Taking other medicines that make you less alert
  • Liver problems
    • Current liver problems
  • Serious intestinal problems
    • Taking HIV medicines
    • Active infectious colitis
  • Risk to fetus
    • Women of childbearing age
See more detailed risks and warnings
  • Taking the wrong medication
  • High blood calcium
    • Current kidney disease
    • Kidney dialysis
    • Hyperparathyroid disease
    • Taking high doses of Vitamin D
  • Kidney stones
    • Previous kidney stones
See more detailed risks and warnings