Compare Aciphex vs. Prevacid

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

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Aciphex (rabeprazole)

Prescription only

Prevacid (lansoprazole)

Prescription or OTC
Treats heartburn and ulcers.

Aciphex (rabeprazole) is good for treating heartburn and ulcers, but should not be used long-term.

Treats heartburn and stomach ulcers.

Prevacid (lansoprazole) is an effective and inexpensive acid reducer commonly used to provide heartburn relief and help heal ulcers.

4.0/ 5 average rating with 21 reviewsforPrevacid
Upsides
  • Aciphex (rabeprazole) works better than over-the-counter medications that have not relieved your acid reflux.
  • The delayed-release pill provides relief over 24 hours.
  • Aciphex (rabeprazole) can be taken with or without food.
  • The capsule can be safely used by children as young as 1 year old.
  • Most people can take Prevacid (lansoprazole) without any noticeable day-to-day side effects.
  • Comes in a dissolving tablet to be placed on the tongue if you cannot or do not like to swallow pills.
  • Prevacid (lansoprazole) lasts longer than other types of antacids (like Zantac, Pepcid, or Tums), and you only need to take it once a day.
  • You can take it in combination with a quick-acting antacid (like Maalox or Tums) if you need relief right away.
  • Prevacid (lansoprazole) is available over-the-counter and as inexpensive, generic options.
Downsides
  • Using Aciphex (rabeprazole) for a long time can can weaken your bones or increase your risk for infectious diarrhea.
  • Lowers magnesium and vitamin B12 in your body so you may need to take supplements.
  • Aciphex (rabeprazole) interferes with how many medications work.
  • Doesn't start working right away like some other acid reducers (Tums, Rolaids, or Maalox).
  • May not be the best choice for patients 65 years of age and older due to risk of bone fractures and C. diff infection (bacterial).
  • Is used if you have frequent heartburns that occur more than 2 days per week. Speak to your doctor or pharmacist if you only have occasional heartburn.
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Used for
Dosage forms
  • Delayed release pill
  • Extended release
  • Dissolving tablet extended release
  • Liquid
Price
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Reviews
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21 reviews so far
71%
saidit'sworth it
71%
saiditworked well
19%
saidit'sa big hassle

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Side effects
5possible side effects
  • Headache
    10%
  • Diarrhea
    5%
  • Nausea
    5%
  • Vomiting
    4%
  • Abdominal pain
    4%
See more detailed side effects
2possible side effects
  • Diarrhea
    4%
  • Abdominal pain
    2%
See more detailed side effects
Risks and risk factors
  • Stomach cancer
  • Kidney inflammation
  • Severe diarrhea
    • Being hospitalized
    • Antibiotic use
  • Bone fractures
    • High dose Aciphex (rabeprazole)
    • Taking Aciphex (rabeprazole) for longer than one year
    • Low bone mineral density
    • Age 50 years or older
    • Alcohol
    • Smoking
    • Taking steroids or anti-seizure medicines
  • Low levels of magnesium and vitamin B12
  • Lupus
See more detailed risks and warnings
  • Stomach cancer
  • Acute kidney damage
  • Clostridium difficile associated diarrhea (CDAD)
  • Bone fractures
    • High dose Prevacid (lansoprazole)
    • Long-term treatment with Prevacid (lansoprazole)
    • Low bone mineral density
    • Older age
  • Lupus
  • Low vitamin or mineral levels
See more detailed risks and warnings