Compare Tums vs. Prevacid

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

Tums
(calcium carbonate)

Prevacid
(lansoprazole)

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.Treats heartburn and stomach ulcers. Prevacid (lansoprazole) is an effective and inexpensive acid reducer commonly used to provide heartburn relief and help heal ulcers.
Reviews & ratings
Filter group. All currently selected
Filter group. All currently selected
5.22Tums
Reviews for Tums
82%
of people (All ages) say Tums is worth it
43%
say it works well
5%
say it's a big hassle
1373 reviews
Have you used Tums (calcium carbonate)?
Worth itNot sureNot worth it
Reviews for Prevacid
71%
+11% better vs. Tums
71%
-28% worse vs. Tums
19%
+14% better vs. Tums
Have you used Prevacid (lansoprazole)?
Worth itNot sureNot worth it
Side effects
TumsPrevacid

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

FDA side effect reports for Tums »
  • Diarrhea 2%
  • Abdominal pain 1%
More Prevacid side effects »
How it works
TumsPrevacid
Tums (Calcium carbonate) is an antacid. It relieves heartburn and indigestion by neutralizing stomach acid.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.
Type of medication
TumsPrevacid
Over-the-counterPrescription or OTC
Available as
TumsPrevacid
  • Chewable tablet
  • Liquid
  • Extended release
  • Dissolving tablet extended release
  • Liquid
Used for
TumsPrevacid
Risk factors for serious side effects
TumsPrevacid
    Coming soon.
    • High dose Prevacid (lansoprazole)
    • Long-term treatment with Prevacid (lansoprazole)
    • Low bone mineral density
    • Older age
    Detailed Prevacid (lansoprazole) risks & warnings »
    Pregnancy
    Price
    TumsPrevacid
    No price related info.
    • Prevacid (lansoprazole) is available over-the-counter and as inexpensive, generic options.
    Interactions
    TumsPrevacid
    No interactions related info.
    • Some prescription drugs can interact with Prevacid (lansoprazole), so talk to your doctor or pharmacist about the medicines you are taking.
    Kidneys and liver
    TumsPrevacid
    • May increase calcium levels too much in people with kidney or thyroid conditions.
    • 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.
    Upsides and benefits
    TumsPrevacid
    • 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.
    • 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 and risks
    TumsPrevacid
    • 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.
    • 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.
    Tips from our pharmacists for people taking the medication
    TumsPrevacid
    • 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.
    • 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.
    Learn more
    More about TumsSide effectsReviews & ratingsAlternativesFDA package insert
    Have you used Tums (calcium carbonate)?
    Worth itNot sureNot worth it
    More about PrevacidSide effectsReviews & ratingsAlternativesFDA package insert
    Have you used Prevacid (lansoprazole)?
    Worth itNot sureNot worth it