Compare Prevacid vs. Tums

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

Prevacid
(lansoprazole)

Tums
(calcium carbonate)

Treats heartburn and stomach ulcers. Prevacid (lansoprazole) is an effective and inexpensive acid reducer commonly used to provide heartburn relief and help heal ulcers.Relieves heartburn. Tums (Calcium carbonate) gives quick relief for heartburn, but does not last all day. Talk to your doctor or pharmacist about other medicines if you need additional relief.
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Reviews & ratings
Filter group. All currently selected
Filter group. All currently selected
5.48Prevacid
Reviews for Prevacid
71%
of people (All ages) say Prevacid is worth it
71%
say it works well
19%
say it's a big hassle
Have you used Prevacid (lansoprazole)?
Worth itNot sureNot worth it
Reviews for Tums
82%
-11% worse vs. Prevacid
43%
+28% better vs. Prevacid
5%
-14% worse vs. Prevacid
1373 reviews
Have you used Tums (calcium carbonate)?
Worth itNot sureNot worth it
Side effects
PrevacidTums
  • Diarrhea 2%
  • Abdominal pain 1%
More Prevacid side effects »

We haven’t found good data for Tums side effects.

FDA side effect reports for Tums »
How it works
PrevacidTums
Prevacid (lansoprazole) is a proton pump inhibitor (PPI). It lowers the amount of acid in your stomach by blocking the final step of stomach acid production.Tums (Calcium carbonate) is an antacid. It relieves heartburn and indigestion by neutralizing stomach acid.
Type of medication
PrevacidTums
Prescription or OTCOver-the-counter
Available as
PrevacidTums
  • Extended release
  • Dissolving tablet extended release
  • Liquid
  • Chewable tablet
  • Liquid
Used for
PrevacidTums
Risk factors for serious side effects
PrevacidTums
  • High dose Prevacid (lansoprazole)
  • Long-term treatment with Prevacid (lansoprazole)
  • Low bone mineral density
  • Older age
Detailed Prevacid (lansoprazole) risks & warnings »
    Coming soon.
    Pregnancy
    Price
    PrevacidTums
    • Prevacid (lansoprazole) is available over-the-counter and as inexpensive, generic options.
    No price related info.
    Interactions
    PrevacidTums
    • Some prescription drugs can interact with Prevacid (lansoprazole), so talk to your doctor or pharmacist about the medicines you are taking.
    No interactions related info.
    Kidneys and liver
    PrevacidTums
    • Prevacid (lansoprazole) can cause acute kidney damage that can occur at any time during treatment. Stop taking Prevacid (lansoprazole) and speak to your doctor immediately if you notice blood in the urine, changes in urine output, swelling of the body, weight gain, fever, or confusion.
    • May increase calcium levels too much in people with kidney or thyroid conditions.
    Upsides and benefits
    PrevacidTums
    • 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.
    • Tums (Calcium carbonate) is an effective, first-line medication for hearburn.
    • Tums (Calcium carbonate) starts working in seconds.
    • Has minimal side effects.
    • Available in chewable form.
    • Is inexpensive and readily available over-the-counter.
    • Coupons are available – speak to your doctor or pharmacist.
    Downsides and risks
    PrevacidTums
    • 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.
    • Because Tums (Calcium carbonate) only lasts for 1 to 2 hours, you may need additional doses.
    • May increase calcium levels too much in people with kidney or thyroid conditions.
    • May have a chalky taste.
    Tips from our pharmacists for people taking the medication
    PrevacidTums
    • Take Prevacid (lansoprazole) with a full glass of water before eating.
    • Starts working in 1 to 3 hours. It can take 1 to 4 days to take full effect.
    • Some prescription drugs can interact with Prevacid (lansoprazole), so talk to your doctor or pharmacist about the medicines you are taking.
    • Do not take for more than 14 days, unless directed by your doctor. Speak to your doctor if your symptoms don't go away after 2 weeks.
    • Prevacid (lansoprazole) capsules can be opened and sprinkled on 1 tablespoon of applesauce, cottage cheese, or yogurt. Swallow immediately after. The dissolving tablets shouldn't be swallowed, broken, or chewed.
    • Take at the first sign of discomfort.
    • You may need to separate Tums (Calcium carbonate) from some medicines to avoid interactions. Talk to your doctor or pharmacist about all the medicines you're taking, including prescription, supplements, and over the counter medicines.
    • Eating smaller, more frequent meals can help alleviate some symptoms of heartburn.
    • Certain spicy or fatty foods increase your risk of heartburn. Talk to your doctor or pharmacist to find out which foods you should avoid.
    • Avoiding eating 3 hours before bedtime can also help prevent heartburn.
    • If heartburn doesn't improve or lasts more than 2 weeks, talk to your doctor.
    Learn more
    More about PrevacidSide effectsReviews & ratingsAlternativesFDA package insert
    Have you used Prevacid (lansoprazole)?
    Worth itNot sureNot worth it
    More about TumsSide effectsReviews & ratingsAlternativesFDA package insert
    Have you used Tums (calcium carbonate)?
    Worth itNot sureNot worth it