Compare pantoprazole vs. Omeprazole

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

Protonix (pantoprazole)

Prescription only

Prilosec (Omeprazole)

Prescription or OTC
Treats heartburn and excess release of stomach acid.

Protonix (pantoprazole) is usually only taken once a day for long-lasting heartburn relief, but it can increase your risk of bone fractures if you've used it for a long time.

3.8/ 5 average rating with 584 reviewsforpantoprazole
Treats heartburn and stomach ulcers.

Prilosec (Omeprazole) gives you long-lasting heartburn relief. Choose the cheapest proton pump inhibitor because they all work equally well for heartburn.

4.0/ 5 average rating with 1167 reviewsforOmeprazole
Upsides
  • Most people can take Protonix (pantoprazole) without any noticeable day-to-day side effects.
  • Protonix (pantoprazole) lasts longer than other types of antacids (like Zantac, Pepcid, or Tums), and you only need to take it once or twice a day.
  • You can take it with a quick-acting antacid (like Maalox or Tums) if you need relief right away.
  • Unlike other proton pump inhibitors, it can be taken with or without food and have the same effectiveness.
  • Can be used in children age 5 or older.
  • Most people can take Omeprazole without any noticeable day-to-day side effects.
  • Omeprazole lasts longer than other types of antacids (like Zantac, Pepcid, or Tums), and you only need to take it once or twice a day.
  • You can take it in combination with a quick-acting antacid (like Maalox or Tums) if you need relief right away.
  • In studies it was better than a placebo (sugar pill) and as good as other proton pump inhibitors at treating heartburn.
  • Available as both a generic and over-the-counter option, so it's pretty affordable.
Downsides
  • Doesn't start working as fast as some other antacids like Tums, Rolaids, or Maalox.
  • Needs to be taken every single day for a certain period of time to be effective.
  • Like with other proton pump inhibitors, long-term use can cause weak or broken bones.
  • Only available as a prescription medicine, not over the counter.
  • Can lower the magnesium level in your body so you may need to take a supplement for it.
  • Doesn't start working as fast as some other antacids like Tums, Rolaids, or Maalox.
  • Like with other proton pump inhibitors, long-term use can cause weak or broken bones.
  • Can cause low levels of magnesium in the blood. You might need to take a magnesium supplement if you use Omeprazole long-term.
  • Although the generic is affordable, other medications might still be cheaper than Omeprazole.
  • Can interact with other drugs so be sure your doctor knows all the medicine you're taking before starting Omeprazole.
Used for
Dosage forms
  • Pill
  • Packet
  • Extended release
Price
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Reviews
584 reviews so far
68%
saidit'sworth it
51%
saiditworked well
13%
saidit'sa big hassle

Have you used Protonix (pantoprazole)?

Leave a review
1167 reviews so far
80%
saidit'sworth it
59%
saiditworked well
8%
saidit'sa big hassle

Have you used Prilosec (Omeprazole)?

Leave a review
Side effects
8possible side effects
  • Headache
    12%
  • Diarrhea
    9%
  • Nausea
    7%
  • Stomach pain
    6%
  • Vomiting
    4%
  • Gas
    4%
  • Dizziness
    3%
  • Joint pain
    3%
See more detailed side effects
13possible side effects
  • Upper respiratory infection
    75%
  • Fever
    33%
  • Headache
    7%
  • Abdominal pain
    5%
  • Nausea
    4%
  • Diarrhea
    4%
  • Accidental injuries
    4%
  • Vomiting
    3%
  • Flatulence
    3%
  • Acid regurgitation
    2%
  • Constipation
    2%
  • Dizziness
    2%
  • Rash
    2%
See more detailed side effects
Risks and risk factors
  • Weakened bones
    • Using multiple daily doses and/or for 1 year or longer
    • People age 65 or older
    • High risk of bone fractures
  • Severe diarrhea
    • People who are being treated in the hospital
  • Kidney problem
  • Lupus
    • People with lupus
  • Low Vitamin B-12 level
    • Taking Protonix (pantoprazole) for more than 3 years
  • Low magnesium level
    • Diuretics (water pills)
    • Digoxin
See more detailed risks and warnings
  • Hiding possible cancer
  • Severe stomach inflammation (atrophic gastritis)
    • Helicobacter pylori infection
    • Autoimmune disease
  • Severe diarrhea
    • Being hospitalized
    • Antibiotic use
  • Broken bones
    • Osteoporosis
    • Age 50 or older
    • Using high medication doses
    • Long-term therapy (1 year or more)
    • Smoking
    • Use of other medications that weaken bones
  • Low vitamin or mineral levels
See more detailed risks and warnings