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How do nurses prevent medication errors?

5 min lesson 2 min for the key points

Fact-checked October 15, 2026

NCLEX-RN topic: Accident, error and injury prevention

In 30 seconds
  • Use two client identifiers; never use the room number.
  • Check the rights three times, the last at the bedside.
  • Scanning helps but never replaces the two-identifier and rights checks.
  • A scanner alert means stop and investigate.
  • After an error: client first, then provider and manager, then incident report.

Key facts

  1. Acceptable identifiers include the client's full name, date of birth or hospital identification number; the room number is never an identifier.
  2. Barcode scanning adds a layer of safety but never replaces checking two identifiers and the rights.
  3. The rights are checked three times: when the medication is taken from the dispensing machine or cart, after it is removed and before it is poured, and at the bedside right before giving it.
Show all 7 key factsShow fewer
  1. Documentation is done immediately after the medication is given, so no one gives the dose a second time.
  2. Distraction is linked to nearly 75% of medication errors, and almost half of errors start at the prescribing stage.
  3. After an error, the nurse's first response is to monitor the client, then notify the nurse manager and provider, then complete an incident report.
  4. Near misses are reported too; incident reports stay out of the medical record.

Quick check1 question · 2 more at the end

Fifteen minutes after a medication pass, a nurse realizes that a client received amlodipine 10 mg by mouth instead of the prescribed 5 mg. Which action should the nurse take first?

Full lesson

Each part starts with its main idea. Open a part when you want the details.

The short answer: Confirm at least two client identifiers against the wristband and the medication administration record, never the room number. Check the rights of medication administration three times, document right after giving the dose and stop to investigate any barcode alert. If an error happens, assess and monitor the client first, notify the provider and nurse manager, then complete an incident report.

1 Why do medication errors happen?Most medication errors come from busy systems and interruptions, not careless nurses. 1 min

Most medication errors come from busy systems and interruptions, not careless nurses. Almost half of errors start when the order is written, and nurses and pharmacists catch many of them. Distraction is linked to nearly 75% of errors, which is why many hospitals keep a no-interruption zone while medications are prepared.

The nurse is the last safety check before the drug reaches the client. A nurse who gives a harmful dose can be held liable even when "just following orders," so every dose needs your own judgment.

2 How do you identify the client correctly?Use at least two client identifiers every time you give a medication. 1 min

Use at least two client identifiers every time you give a medication. Acceptable identifiers include the full name, the date of birth and the hospital identification number. Never use the room number, because clients change rooms.

  1. Ask the client to state their name and date of birth when they can.
  2. Compare the answers with the wristband and the medication administration record (MAR).
  3. Scan the wristband if your unit uses barcodes. Scanning adds a layer of safety but never replaces the two-identifier check.
3 What are the rights, and when do you check them?The six core rights are checked at least three times before a dose is given. 1 min

The six core rights are checked at least three times before a dose is given. They are the right client, medication, dose, route, time and documentation. Many nurses also check the right reason, assessment, education, response and the client's right to refuse.

Check When
First As you take the package from the dispensing machine or cart (also check the expiration date)
Second After it is removed and before you pour it or draw it up
Third At the bedside, right before you give it

Document immediately after the client takes the medication, so another nurse does not give it again. Stay until oral medications are swallowed. Some high-alert drugs, such as insulin, need a second nurse to check at step two (see high-alert medications).

4 When is the risk of error highest?Errors cluster around a few predictable high-risk moments. 1 min

Errors cluster around a few predictable high-risk moments. Watch most closely in these situations:

  • High-alert drugs such as insulin, anticoagulants and IV potassium, where one error causes severe harm.
  • Look-alike, sound-alike names and similar packages stored side by side.
  • Error-prone abbreviations such as "qd," "D/C" or "subq." Ask the provider to clarify and rewrite the order.
  • Transitions of care, when medication reconciliation compares home and new medications.
  • Barcode alerts. Stop and investigate; an alert may be a real error, not a glitch.
  • Someone else's preparation. Never give a medication you did not check yourself.
5 What the nurse does after an errorAfter any error, protect the client first and then report it. 1 min

After any error, protect the client first and then report it. Your first response is to assess and monitor the client for effects of the medication. Next, notify the nurse manager and the provider, who may order treatment or extra monitoring.

Then complete an incident report. It is used to find system problems, is not part of the medical record and is never mentioned in it. In the chart, document the event, the provider notification and the care given.

Report near misses, which are errors caught before they reach the client, as well. A Just Culture consoles a nurse after a simple human error and fixes the system. It coaches at-risk choices, such as skipping the barcode scan, and disciplines only reckless behavior.

Common mistakes

The traps students fall into most. Read these before you practice.

  • Watch out: Barcode scanning is an extra layer, not a substitute for checking two identifiers and the rights.

  • Watch out: A scanner alert means stop and investigate, not rescan or work around it.

  • Watch out: Document after the client takes the medication, not before you enter the room.

  • Watch out: After an error, assess the client first, not the incident report first.

  • Watch out: Give only medications you checked yourself, never a dose a coworker prepared.

How to remember it

Remember the sequence "two IDs, three checks, then chart" for every single dose. If anything feels wrong, such as an alert, a client's doubt or an unclear order, stop before you give the dose.

Self-check:

  1. Name two acceptable client identifiers and one that is never acceptable.
  2. Say when each of the three rights checks happens.
  3. List, in order, the first three things you do after discovering a medication error.
Check yourself

Try it: 2 questions

  • 2 questions
  • Safety and Infection Control
  • 5 min in exam mode

Questions are original practice items written to the published exam content, not real exam questions.

Finished this lesson? It is marked done when you finish the questions above. You can also mark it yourself.
Sources (6)
  1. Open RN Nursing Skills 2e, 15.2 Basic Concepts of Administering Medications
  2. Open RN Nursing Pharmacology 2e, 2.5 Preventing Medication Errors
  3. Open RN Nursing Management and Professional Concepts 2e, 5.5 Protecting Your Nursing License
  4. Open RN Nursing Fundamentals 2e, 5.2 Basic Safety Concepts
  5. Open RN Nursing Fundamentals 2e, 5.4 Culture of Safety
  6. Open RN Nursing Fundamentals 2e, 2.5 Documentation

Written with AI and checked against the sources above by a separate review step. No RN reviews this content. How we make our content. For exam study only, not medical advice; follow your facility's policies and current guidelines in practice. HealthcareExams is independent and not affiliated with NCSBN.

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