Health information to help you understand symptoms. It isn't a diagnosis.
Check symptoms

Sucralfate

Brand names: Carafate

Sucralfate coats ulcers in the stomach and upper intestine, shielding them from acid so they can heal.

Brand namesCarafate
Type of medicineUlcer-coating medicine
Prescription?Prescription
ImportantThis page is general information, not a prescription. Don't start, stop, or change a medicine without talking to your provider or pharmacist.

Overview

It acts mostly in the gut and is barely absorbed.

What it's used for

  • Duodenal ulcers
  • Off-label: stomach ulcers and irritation

How to take it

  • Take it on an empty stomach, 1 hour before meals and at bedtime.
  • Take other medicines at least 2 hours before or after it.

Your dose depends on your health and other medicines. Always follow your prescription label, and ask your pharmacist if anything is unclear.

Side effects

Common side effects

  • Constipation
  • Dry mouth
Call 911Swelling of the face, lips, or throat, hives, or trouble breathing
Call your provider todayHigh blood sugar in people with diabetes (liquid form)

Warnings

  • Aluminum can build up in people with kidney failure.

Other medicines, foods, and alcohol

  • It blocks absorption of many medicines, including ciprofloxacin, levothyroxine, digoxin, and warfarin. Space them out.

Tell your provider and pharmacist about every medicine, vitamin, and supplement you take.

Pregnancy and breastfeeding

Commonly used in pregnancy when needed.

Missed doses, overdose, and storage

If you miss a dose

Take it as soon as you remember, unless it's almost time for your next dose. Then skip the missed dose. Don't take two doses at once.

If someone takes too much

Call Poison Control at 1-800-222-1222 or get help online at poison.org. Call 911 if the person collapses, has a seizure, has trouble breathing, or can't be woken.

Storing it

Store at room temperature, away from heat and moisture (not in the bathroom), and out of reach of children and pets.

Conditions it's used for

Sources

Last updated 2026-11-13.