👤 By the CinnaRN Clinical Content Team🕐 Updated 2026-08-23🏷️ Pharmacological Therapies🔖 Free to read, print, and share
Also known as: Carafate · mucosal protectant · ulcer coating drug · the bandage drug
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Use this quick-reference guide to spot, treat, and prevent Sucralfate on the NCLEX. Keep it handy during review and on exam day!
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📒 The 1-minute cheat sheet
📌 Uses
Duodenal/peptic ulcer, stress ulcer
Coats ulcer → physical barrier
✅ Do
Take 1 hr before meals & HS
Empty stomach for best coating
📌 Avoid
Separate other meds by 2 hr
No antacid w/in 30 min
🩺 Signs
Constipation most common
↑ fluid & fiber to prevent it
📚 Sucralfate — full study notes
The cheat sheet above is your quick recall card. These notes go deeper — what it is, what to do first, what must be reported, and what to teach.
Sucralfate is a mucosal protectant that forms a sticky, paste-like barrier over ulcers and erosions, shielding them from acid and pepsin so they can heal. It is used for duodenal and gastric ulcers and stress-ulcer prevention. Memory aid: it acts like a 'bandage' that coats the ulcer rather than reducing acid.
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Key points
Understand these first
Coats ulcerated tissue to protect it from acid, pepsin, and bile.
Requires an acidic environment to activate, so it is given on an empty stomach 1 hour before meals and at bedtime.
Antacids, H2 blockers, and PPIs should be separated by at least 30 to 60 minutes because they reduce its activation.
Constipation is the most common side effect.
Binds many drugs (digoxin, phenytoin, fluoroquinolones, levothyroxine, warfarin), reducing their absorption.
Minimal systemic absorption, so it has few systemic effects.
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Nursing priorities
What to do, in order
Give on an empty stomach 1 hour before meals and at bedtime.
Separate other oral medications by at least 2 hours to prevent binding.
Separate from antacids by at least 30 minutes.
Monitor bowel pattern and treat constipation.
Assess for relief of epigastric pain and ulcer healing.
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Red flags — report now
Escalate immediately
Report severe or persistent constipation or signs of obstruction.
Report reduced effect of other drugs (e.g., bleeding or clotting changes on warfarin) from impaired absorption.
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Patient teaching
What patients must know
Take on an empty stomach, 1 hour before meals and at bedtime.
Take other medicines at least 2 hours apart from this drug.
Increase fluids and fiber to prevent constipation.
Do not take antacids within 30 minutes of this medication.
❓ Sucralfate: NCLEX FAQs
What are the priority nursing interventions for Sucralfate?
Give on an empty stomach 1 hour before meals and at bedtime. Separate other oral medications by at least 2 hours to prevent binding. Separate from antacids by at least 30 minutes. Monitor bowel pattern and treat constipation.
What are the warning signs of Sucralfate a nurse must report?
Report severe or persistent constipation or signs of obstruction. Report reduced effect of other drugs (e.g., bleeding or clotting changes on warfarin) from impaired absorption.
What do I need to know about Sucralfate for the NCLEX?
Coats ulcerated tissue to protect it from acid, pepsin, and bile. Requires an acidic environment to activate, so it is given on an empty stomach 1 hour before meals and at bedtime. Antacids, H2 blockers, and PPIs should be separated by at least 30 to 60 minutes because they reduce its activation. Constipation is the most common side effect.
What patient teaching is important for Sucralfate?
Take on an empty stomach, 1 hour before meals and at bedtime. Take other medicines at least 2 hours apart from this drug. Increase fluids and fiber to prevent constipation. Do not take antacids within 30 minutes of this medication.
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Quick Tip
Coats ulcerated tissue to protect it from acid, pepsin, and bile.