Compare omeprazole vs. Rolaids

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

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Treats heartburn and excess release of stomach acid.

Prilosec (omeprazole) gives you long-lasting heartburn relief but has some risks if used long term.

4.0/ 5 average rating with 1167 reviewsforomeprazole
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
  • Prilosec (omeprazole) lasts longer (up to 72 hours) than other classes of acid reducers (like Zantac, Pepcid, or Tums).
  • Only take once or twice daily.
  • Can take together with a quick-acting antacid (like Maalox or Tums) for quick relief.
  • Generic and over-the-counter options available.
  • Safe to use in children ages 1 or older.
  • Works really fast.
  • Available over the counter without a prescription.
  • Cheap.
Downsides
  • Takes up to an hour to start noticing the effects of Prilosec (omeprazole).
  • Prilosec (omeprazole) can interact with other drugs. Let your doctor and pharmacist know what medications you're taking before starting Prilosec (omeprazole).
  • Long-term use of Prilosec (omeprazole) can put you at risk for many health issues such as osteoporosis, low magnesium or vitamin B12 levels, and rebound acid secretion (where your body starts to create more acid than before after stoping Prilosec (omeprazole)).
  • 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.
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Used for
Dosage forms
  • Pill
  • Powder
  • Chewable tablet
  • Liquid
Price
No pricing information available
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Reviews
1167 reviews so far
80%
saidit'sworth it
59%
saiditworked well
8%
saidit'sa big hassle

Have you used Prilosec (omeprazole)?

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
11possible side effects
  • Headache
    7%
  • Abdominal pain
    5%
  • Nausea
    4%
  • Diarrhea
    4%
  • Vomiting
    3%
  • Flatulence
    3%
  • Acid regurgitation
    2%
  • Upper respiratory infection
    2%
  • Constipation
    2%
  • Dizziness
    2%
  • Rash
    2%
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
  • Risk of cancer
  • Lupus
    • History of cutaneous or systemic lupus erythematosus
  • Severe diarrhea associated with C.difficile infection
    • Being hospitalized
    • Antibiotic use
  • Bone fractures
    • Osteoporosis
    • Using high medication doses
    • Long-term therapy (1 year or more)
    • Use of other medications that weaken bones
  • Low Vitamin B12 and Magnesium
    • Taking water pills (Magnesium)
    • Women (Vitamin B12)
    • Over the age of 30 (Vitamin B12)
  • Kidney damage
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