Medication Safety: The Complete Guide to Preventing Medication Errors for Nurses

Unsafe medication practices and medication errors are a leading cause of avoidable harm in health systems across the world. The World Health Organization has estimated the global cost of medication errors at tens of billions of US dollars a year, and launched its Global Patient Safety Challenge, Medication Without Harm, with the aim of reducing severe avoidable medication-related harm. Behind every statistic is a patient who was harmed, a family affected, and very often a nurse who carries the memory for years.

Nurses administer most of the medicines given in hospitals and care settings, and they are often the last line of defence before a medicine reaches a patient. But medication safety is not about individual perfection. Most errors happen because of weaknesses in systems: confusing packaging, illegible or ambiguous prescriptions, interruptions, staffing pressures, poor handovers and technology that does not support the way nurses work. This complete guide explains why medication errors happen, the core principles of safe administration, high-risk medicines and situations, the role of technology, how to calculate safely, what to do when an error happens, and how nurses can lead a culture of safety.

What is a medication error?

A medication error is any preventable event that may cause or lead to inappropriate medication use or patient harm while the medication is in the control of a healthcare professional, patient or consumer. Errors can happen at any stage of the medication process:

• Prescribing: wrong drug, dose, route or frequency; prescribing a medicine the patient is allergic to; drug interactions; illegible or ambiguous prescriptions.
• Transcribing: copying errors when orders are transferred between documents or systems.
• Dispensing: the wrong medicine, strength or formulation supplied by pharmacy.
• Preparation: incorrect dilution, calculation errors, wrong diluent, contamination.
• Administration: wrong patient, drug, dose, route, time, rate or technique; omitted doses; giving a medicine that has been stopped.
• Monitoring: failing to check blood levels, vital signs, or effects and side effects.

Not every error causes harm. Many are caught before reaching the patient (“near misses”) or reach the patient without causing harm. Others cause temporary harm, permanent harm or death. An adverse drug event is harm caused by a medicine, whether or not an error occurred; some adverse events, such as an unexpected allergic reaction to a first dose, are not errors.

How common are medication errors?

Studies from many countries suggest that medication errors occur in a significant proportion of hospital medication administrations, and that around one in twenty patients experiences preventable medication-related harm. Omitted and delayed doses are among the most common errors, along with wrong doses and wrong timing. Errors are more likely in intensive care, emergency departments, paediatrics, older adults with multiple medicines, transitions of care (admission, transfer and discharge), and in low-resource settings with staff shortages.

Why medication errors happen: the systems view

Safety science, drawing on aviation and other high-risk industries, recognises that humans make mistakes, and that safe systems are designed to prevent errors, catch them before they cause harm, and limit harm when they occur. James Reason’s “Swiss cheese model” describes how errors pass through several layers of defence, each with holes, only when the holes line up.

Common contributing factors include:

• Interruptions and distractions during medication preparation and administration.
• Workload and staffing: high patient-to-nurse ratios, fatigue, long shifts and night work.
• Look-alike, sound-alike medicines: similar names, packaging or labels.
• Poor communication: ambiguous orders, abbreviations, verbal orders and incomplete handovers.
• Calculation complexity, especially in paediatrics and with infusions.
• Lack of information: missing allergy status, weight, kidney function or medication history.
• Inadequate training on new medicines, devices or systems.
• Equipment design: infusion pumps with confusing interfaces, unclear syringes.
• Workarounds created when systems do not fit real practice.
• Organisational culture: fear of blame, which discourages reporting and learning.

Understanding these factors helps shift the focus from “Who made the mistake?” to “Why did it happen, and how do we stop it happening again?”

The “rights” of medication administration

Nurses around the world are taught the “rights” of medication administration as a framework for checking. The traditional five rights are:

1. Right patient: confirm identity using at least two identifiers, such as full name and date of birth or hospital number, checked against the wristband and chart. Ask patients to state their name rather than asking “Are you Mr Smith?”
2. Right drug: check the medicine name against the prescription, being alert to look-alike, sound-alike names.
3. Right dose: check the dose and calculation, and whether it is appropriate for the patient’s age, weight and kidney function.
4. Right route: oral, intravenous, intramuscular, subcutaneous, enteral, topical, inhaled. Wrong-route errors, such as giving an oral liquid intravenously, can be fatal.
5. Right time: including frequency and timing in relation to meals, other medicines and procedures.

Additional rights often included are:

• Right documentation: record administration immediately after giving the medicine, not before.
• Right reason: understand why the patient is receiving the medicine.
• Right response: monitor the effect.
• Right to refuse: respect the patient’s informed decision.
• Right education: explain the medicine to the patient.
• Right form: such as tablet, liquid, modified-release.

The rights are a useful checklist, but research shows they cannot by themselves prevent errors that originate in the system. They work best alongside system-level safeguards.

Patient identification

Wrong-patient errors remain common, particularly in busy wards where patients have similar names, are moved between beds, or cannot communicate. Best practice includes:

• Using at least two patient identifiers every time.
• Checking identity at the bedside, with the patient, not at the nurses’ station.
• Making sure every inpatient wears an accurate identification band.
• Using name alerts for patients with similar names.
• Extra care for patients who are confused, unconscious, sedated, children, or who do not speak the local language.
• Barcode scanning of wristbands and medicines where available.

Allergy checks

Before giving any medicine, confirm the patient’s allergy status. Record the type of reaction, not just the drug name, because many “allergies” are actually side effects or intolerances, and accurate information helps prescribers choose safely. Be aware of cross-reactivity, for example between some antibiotics. Never give a medicine if allergy status is unknown unless it is an emergency and the risk has been considered.

High-alert medicines

High-alert medicines are those that carry a heightened risk of causing significant harm when used in error. Errors with these medicines are not necessarily more common, but their consequences are more serious. International patient safety organisations list several groups, and many hospitals use the acronym “A PINCH” to remember them:

• Anti-infectives (such as aminoglycosides and vancomycin, which need level monitoring).
• Potassium and other concentrated electrolytes.
• Insulin.
• Narcotics (opioids) and sedatives.
• Chemotherapy agents.
• Heparin and other anticoagulants.

Other high-alert medicines include neuromuscular blocking agents, methotrexate, digoxin, and intravenous medicines in children.

Safeguards for high-alert medicines

• Independent double checks: two qualified practitioners separately check the prescription, calculation, product and pump settings, without being influenced by each other.
• Standardised concentrations and pre-prepared products where possible.
• Removing concentrated potassium chloride from general ward stock and using premixed bags.
• Smart infusion pumps with dose error reduction software and drug libraries.
• Clear labelling of all syringes and lines.
• Protocols for insulin, anticoagulation and opioid monitoring.

Insulin safety

Insulin errors are among the most common causes of serious medication harm. Key safety points:

• Never abbreviate “units” as “U” or “IU”, which can be misread as zero or a number.
• Use only insulin syringes or pens to measure insulin, never ordinary syringes.
• Never draw insulin from a pen device with a syringe.
• Check the insulin name carefully: rapid-acting, short-acting, intermediate and long-acting insulins have similar names.
• Coordinate insulin timing with meals and blood glucose checks.
• Do not omit basal insulin in people with type 1 diabetes, even if they are not eating.

Opioid safety

• Check the formulation (immediate-release or modified-release) and strength, as products look similar.
• Confirm when the last dose was given and whether the patient has previously taken opioids.
• Monitor sedation and breathing rate, especially in older adults, people with kidney impairment and those with sleep apnoea.
• Know where naloxone is kept and how to use it.
• Be particularly cautious with conversions between different opioids and routes.

Anticoagulant safety

• Check doses carefully against weight and kidney function.
• Avoid duplicate anticoagulation when patients switch between medicines.
• Check monitoring results, such as INR for warfarin, before giving doses.
• Watch for and report signs of bleeding.

Look-alike, sound-alike medicines

Many errors happen because medicines have similar names or packaging. Common examples include hydroxyzine and hydralazine, morphine and hydromorphone, and various insulins. Strategies include:

• Tall Man lettering, which uses capital letters to highlight differences, such as hydrOXYzine and hydrALAZINE.
• Storing look-alike medicines apart.
• Using both brand and generic names on prescriptions and labels where helpful.
• Reading labels carefully every time, rather than relying on the appearance of the box.
• Checking the indication: if the medicine does not seem to match the patient’s condition, stop and check.

Interruptions: protecting medication rounds

Studies show that each interruption during medication administration increases the risk of a procedural failure and a clinical error. Interruptions are a major and modifiable risk. Strategies used in many hospitals include:

• Wearing “do not disturb” tabards or vests during medicine rounds.
• Designated quiet zones for medicine preparation.
• Redirecting phone calls during rounds.
• Educating colleagues, patients and families about why nurses should not be interrupted during medication rounds unless urgent.
• If interrupted, starting the checking process again from the beginning.

Safe drug calculations

Calculation errors, particularly tenfold errors from misplaced decimal points, can be fatal, especially in children and with intravenous infusions. Good practice includes:

• Writing doses clearly: always use a leading zero (0.5 mg, not .5 mg) and never use a trailing zero (5 mg, not 5.0 mg).
• Using standard formulas consistently: dose required divided by dose available, multiplied by volume.
• Estimating the answer first, so that a result that is wildly different is noticed.
• Avoiding unnecessary unit conversions, and being careful with micrograms and milligrams. Writing “micrograms” in full rather than “mcg” or “µg” reduces confusion.
• Double-checking calculations for high-alert medicines and paediatric doses.
• Using weight-based dosing tools and verified reference resources.
• Asking for help if unsure. No one should feel embarrassed to ask.

Intravenous medicines and infusions

Intravenous medicines carry particular risks because they act quickly and cannot be retrieved once given. Safety measures include:

• Checking compatibility before mixing or giving medicines through the same line.
• Labelling every syringe and infusion bag with the drug, dose, concentration, date, time and patient details.
• Tracing lines from the bag to the patient before connecting, to prevent wrong-route errors.
• Using smart pumps with drug libraries and respecting their alerts rather than overriding them by habit.
• Checking pump rates at handover and every time a bag is changed.
• Monitoring infusion sites for signs of extravasation or phlebitis.
• Using enteral syringes and connectors (such as ENFit) for feeding tubes, which cannot connect to intravenous lines.

Medication reconciliation and transitions of care

Many errors occur when patients move between settings: admission to hospital, transfer between wards, and discharge home. Medication reconciliation is the process of creating the most accurate list of a patient’s medicines and comparing it with prescribed medicines at each transition, to identify and resolve discrepancies such as omissions, duplications and dose errors.

Nurses contribute by:

• Asking patients and families about all medicines, including over-the-counter products, herbal remedies and supplements.
• Checking patients’ own medicines brought from home.
• Highlighting discrepancies to prescribers and pharmacists.
• Ensuring time-critical medicines, such as those for Parkinson’s disease, epilepsy and diabetes, are not delayed on admission.
• Explaining any changes to patients at discharge and providing updated lists.

Time-critical medicines and omitted doses

Omitted and delayed doses are among the most common medication errors and can cause serious harm. Some medicines are time-critical, meaning that a delay of more than about 30 minutes to two hours can cause harm. Examples include medicines for Parkinson’s disease, anti-seizure medicines, insulin, antibiotics in sepsis, anticoagulants and immunosuppressants after transplants. Always document the reason when a dose is omitted, and escalate if a time-critical medicine is unavailable or cannot be given.

Older adults and polypharmacy

Older adults are at higher risk of medication harm because they often take many medicines, have reduced kidney and liver function, and are more sensitive to side effects such as sedation, confusion, falls and bleeding. Nurses can help by recognising possible adverse effects, such as new confusion, falls or constipation, and raising them for medicine review. Tools such as the Beers Criteria and STOPP/START criteria help prescribers identify potentially inappropriate medicines.

Children and medication safety

Children are at particularly high risk because doses must be calculated by weight, small volumes are needed, many medicines are not available in child-friendly formulations, and children cannot always report side effects. Safety measures include weighing children accurately in kilograms, double-checking calculations, using oral syringes for liquid medicines, and involving parents, who often know their child’s usual doses.

Technology: help and hazard

Technology can reduce errors significantly:

• Electronic prescribing eliminates illegible handwriting and can provide alerts for allergies, interactions and dose ranges.
• Barcode medication administration confirms the right patient and medicine at the bedside.
• Automated dispensing cabinets control access to medicines.
• Smart infusion pumps prevent programming errors.

However, technology also introduces new risks: alert fatigue from too many warnings, selecting the wrong item from drop-down menus, workarounds when scanners fail, and over-reliance on systems. Nurses should be involved in designing and evaluating systems, report problems, and avoid workarounds such as scanning a barcode taped to a desk rather than the patient’s wristband.

Involving patients and families

Patients and families are powerful partners in medication safety. Encourage them to:

• Know the names and purposes of their medicines.
• Speak up if a medicine looks different or seems unfamiliar.
• Tell staff about allergies and previous reactions.
• Bring all their medicines, or an up-to-date list, to appointments and hospital admissions.
• Ask questions before leaving hospital: what has changed, why, and what to watch for.

The WHO “5 Moments for Medication Safety” tool helps patients ask the right questions when starting, taking, adding, reviewing and stopping medicines.

When an error happens: what to do

If you make or discover a medication error, act calmly and promptly:

1. Check the patient first. Assess their condition, vital signs and any symptoms. Provide immediate care if needed.
2. Inform the prescriber or responsible clinician and the nurse in charge straight away, so monitoring or treatment can begin.
3. Follow instructions for monitoring or antidotes.
4. Document factually in the patient’s record what happened, what was done and the patient’s condition.
5. Report the incident through your organisation’s reporting system.
6. Be open with the patient and family in line with your organisation’s duty of candour or open disclosure policy. Patients have a right to know when something has gone wrong in their care.
7. Seek support for yourself.

Concealing an error is never the right choice. It puts the patient at risk, prevents learning, and is treated much more seriously by employers and regulators than the error itself.

Reporting and learning

Incident reporting systems allow organisations to identify patterns, understand causes and make changes. Near misses are just as valuable to report as errors that reach the patient, because they reveal weaknesses before harm occurs. Effective organisations investigate serious incidents using approaches such as root cause analysis or systems-based learning reviews, focusing on contributing factors rather than blaming individuals. Feedback to staff about what was learned and what changed is essential to keep reporting meaningful.

Just culture

A just culture balances learning with accountability. It recognises that:

• Human error, such as a slip or lapse, should be met with support and system improvement, not punishment.
• At-risk behaviour, such as taking shortcuts that have become normalised, should be addressed through coaching and by fixing the reasons people feel they need shortcuts.
• Reckless behaviour, a conscious disregard of substantial and unjustifiable risk, warrants disciplinary action.

In a just culture, nurses feel safe to report errors and raise concerns, and organisations take responsibility for designing safe systems. Several high-profile cases worldwide in which nurses faced criminal prosecution after medication errors have alarmed the profession and highlighted the importance of systems-based approaches. Most patient safety organisations argue that criminalising honest errors makes healthcare less safe, because it discourages reporting.

The second victim: supporting nurses after an error

Healthcare workers involved in errors often experience intense distress, including guilt, shame, anxiety, sleeplessness, loss of confidence and, in some cases, symptoms of post-traumatic stress. This has been described as the “second victim” phenomenon, though some prefer the term “healthcare workers involved in adverse events” to keep the patient at the centre. Support may include peer support programmes, debriefing, access to occupational health and psychological services, and clear, compassionate communication about investigation processes. If you are involved in an error, you are not alone, and seeking support is a sign of professionalism, not weakness.

Building a personal safety practice

• Never give a medicine you have not prepared yourself or cannot identify.
• Never sign for a medicine before giving it.
• Question any prescription that seems unclear, unusual or unsafe, and do not give it until clarified.
• Check, check and check again with high-alert medicines.
• Know your medicines: their uses, usual doses, side effects and monitoring requirements.
• Stay up to date with training and local policies.
• Look after yourself: fatigue, hunger and stress increase errors. Take your breaks.
• Speak up when you see unsafe practice, using structured tools such as SBAR (Situation, Background, Assessment, Recommendation).

Swallowing difficulties and altering medicines

Many patients, particularly older adults and people after stroke, have difficulty swallowing tablets. Crushing tablets or opening capsules may seem like a simple solution, but it can be dangerous. Modified-release, enteric-coated and some other formulations are designed to release medicine slowly or protect it from stomach acid. Crushing them can release the full dose at once, causing toxicity, or destroy the medicine. Some medicines, such as certain cytotoxic and hormonal drugs, are hazardous to the person handling them when crushed.

Safe practice includes:

• Asking a pharmacist before crushing any tablet or opening any capsule.
• Asking whether a liquid, dispersible, patch or alternative formulation is available.
• Referring patients with swallowing difficulties for a swallowing assessment.
• Following specific guidance for giving medicines via feeding tubes, including flushing before and after each medicine and giving medicines separately.
• Remembering that altering a medicine may make its use “off-label”, which has implications for responsibility and consent.

Controlled drugs

Controlled drugs, such as opioids, some sedatives and stimulants, are subject to strict legal requirements because of their potential for misuse, diversion and harm. Requirements vary by country but usually include secure storage, registers recording every dose received, administered and destroyed, witnessed administration and regular stock checks. Nurses should follow local policies exactly, report discrepancies immediately, and never leave controlled drugs unattended. Diversion of controlled drugs by healthcare workers does occur, sometimes linked to addiction, and puts patients at risk of under-treated pain. Recognising warning signs and supporting colleagues to seek help is part of keeping patients and staff safe.

Storage, cold chain and expiry

Medicines can become ineffective or harmful if stored incorrectly. Vaccines, insulin and many biological medicines need refrigeration within specific temperature ranges, and the “cold chain” must be maintained from manufacturer to patient. Fridges should be dedicated to medicines, have temperatures monitored and recorded daily, and staff should know what to do if temperatures go out of range. Check expiry dates before every administration, and note opening dates on multi-dose products such as eye drops and liquids, which often have shortened shelf lives once opened. In hot climates, ensure medicines are stored according to their labelled temperature limits, as heat can degrade many products.

Falsified and substandard medicines

The World Health Organization estimates that a significant proportion of medicines in some low- and middle-income countries may be substandard or falsified. These products may contain the wrong ingredient, the wrong amount, harmful contaminants or no active ingredient at all, leading to treatment failure, antimicrobial resistance and direct harm. Nurses can help by obtaining medicines only through authorised supply chains, inspecting packaging for signs of tampering, unusual spelling or poor print quality, reporting suspected falsified medicines to national regulators and pharmacovigilance systems, and educating patients about the risks of buying medicines from unregulated markets or websites.

Antimicrobial stewardship and nurses

Antibiotics are among the most commonly prescribed medicines, and their misuse drives antimicrobial resistance, one of the greatest threats to global health. Nurses play a vital role in antimicrobial stewardship: ensuring antibiotics are given on time, especially in sepsis; making sure cultures are taken before the first dose where possible; prompting daily review of whether antibiotics are still needed; supporting switches from intravenous to oral antibiotics when appropriate; checking allergy labels for accuracy; and educating patients to complete courses as prescribed and not share or save antibiotics.

Medication safety in community and home care

Many medication errors occur outside hospitals, in care homes, community settings and patients’ own homes. Risks include multiple prescribers, poor communication between services, complex regimens, confusion over changes after discharge, and patients or carers managing many medicines with limited support. Community nurses can improve safety by carrying out regular medicine reviews, checking that patients understand their regimens, simplifying where possible, organising medicines with the help of pharmacists, recognising side effects early and ensuring good communication between hospital and community teams. Compliance aids, such as dosette boxes, can help some patients but can also create risks if not filled accurately or if medicines change frequently.

Handover and communication

Medication information must be passed clearly between shifts and teams. At handover, include medicines due soon, time-critical medicines, recent dose changes, infusions running and their rates, results that affect dosing (such as INR or blood glucose), allergies, and any concerns about side effects. Bedside handover, where the outgoing and incoming nurse check infusion pumps and lines together with the patient, reduces errors. Structured communication tools help make sure nothing important is missed.

Learning from typical error scenarios

The following composite scenarios illustrate how errors arise and how they can be prevented:

• The tenfold insulin dose: “6U” of insulin was misread as “60”. Prevention: never abbreviate units; use electronic prescribing; independent double checks.
• The wrong patient: two patients with similar surnames in neighbouring beds. Prevention: two identifiers at the bedside, name alerts, barcode scanning.
• The missed Parkinson’s dose: a patient admitted through the emergency department missed several doses, leading to severe stiffness and swallowing difficulty. Prevention: time-critical medicine lists, prompt reconciliation, stocking key medicines on admission wards.
• The infusion rate: an infusion pump was programmed at 100 millilitres per hour instead of 10. Prevention: smart pumps with drug libraries, independent checks for high-alert infusions, bedside handover of pump settings.
• The oral medicine given intravenously: an oral liquid drawn up in a standard syringe was connected to an intravenous line. Prevention: oral and enteral syringes that cannot connect to intravenous devices.

In each case, the solution is not simply “be more careful”, but changes that make the right action easier and the wrong action harder.

Student nurses and new graduates

Students and newly qualified nurses are learning medication management in demanding environments. They should always be supervised according to local policy, never pressured into giving medicines they are unsure about, and encouraged to ask questions. Experienced nurses can model safe practice by thinking aloud as they check medicines, explaining why each step matters, and creating an atmosphere where questions are welcomed. New graduates should be honest about gaps in knowledge, particularly with unfamiliar medicines, high-alert medicines and complex infusions, and should use preceptors and pharmacists as resources.

Staffing, fatigue and medication safety

A substantial body of research links nurse staffing levels and workload to patient outcomes, including medication errors and missed care. When nurses care for too many patients, they are more likely to be interrupted, to rush, to delay or omit doses, and to have less time to monitor patients for effects and side effects. Fatigue from long shifts, consecutive night shifts and skipped breaks impairs attention and memory in ways comparable to alcohol intoxication. Medication safety therefore cannot be separated from safe staffing. Nurses should report unsafe staffing through formal channels, document how workload affects care, and take the breaks they are entitled to. Organisations should design rotas that limit consecutive night shifts and very long hours, and protect time for medication rounds.

Self-administration of medicines in hospital

Many hospitals now allow suitable patients to manage their own medicines during their stay, particularly people with long-term conditions such as diabetes and Parkinson’s disease who are used to managing their own complex regimens. Self-administration can reduce omitted and delayed doses, maintain independence and prepare patients for discharge. It requires a careful assessment of the patient’s ability, secure storage at the bedside, clear documentation and regular review, especially if the patient’s condition changes.

Measuring medication safety

Organisations use several measures to monitor medication safety, including incident reports, rates of omitted doses, audits of high-alert medicine checks, use of antidotes such as naloxone as a signal of possible opioid overdose, and point-prevalence audits of medication administration records. Global initiatives encourage health systems to track severe avoidable medication-related harm. Nurses contribute by reporting incidents, participating in audits and sharing ideas for improvement. Measurement is only useful when it leads to learning and action, and when frontline staff see the results.

Key principles to remember

• Most medication errors result from system weaknesses, not careless individuals.
• Check patient identity with two identifiers at the bedside, every time.
• Treat high-alert medicines with extra safeguards, including independent double checks.
• Protect medication rounds from interruptions.
• Never give a medicine you are unsure about; question and clarify.
• Report all errors and near misses, be open with patients, and seek support.

Medication safety in emergencies

Emergencies such as cardiac arrest, anaphylaxis, severe hypoglycaemia and seizures demand rapid medication decisions under pressure, which increases the risk of error. Preparation reduces this risk: knowing where emergency medicines are kept, checking emergency trolleys regularly, using pre-filled syringes and standardised emergency drug charts, and practising scenarios through simulation training. During an emergency, a closed-loop communication style helps: the team leader states the drug and dose clearly, the nurse repeats it back before giving it, and confirms once it has been given. A designated person should record every medicine, dose and time. After the event, a brief debrief can identify what went well and what could be improved.

Medication safety and patient education at discharge

The period after discharge from hospital is a time of high risk, as patients often go home with new medicines, stopped medicines and changed doses. Before discharge, nurses can make sure patients and carers understand which medicines to take, how and when, what each is for, what has changed and why, which side effects to look out for, and who to contact with questions. The “teach-back” method, in which patients explain the information back in their own words, is an effective way to check understanding. Providing a clear written medicine list and making sure community pharmacists and primary care teams receive accurate information closes the loop.

Speaking up for safety

Many errors could be prevented if someone had felt able to speak up. Hierarchies, fear of conflict and time pressure can stop nurses from questioning a prescription or pausing a colleague. Structured approaches help, such as the “two-challenge rule”, where a concern is voiced at least twice, and agreed phrases that signal a safety issue, such as “I am concerned, I am uncomfortable, this is a safety issue”. Leaders who thank staff for raising concerns, even when the concern turns out to be unfounded, build a team where speaking up becomes normal.

Frequently asked questions

Will I lose my registration if I make a medication error?

Most medication errors are dealt with locally through learning and support, not by regulators. Regulators are generally concerned with patterns of unsafe practice, dishonesty or concealment, and failure to learn. Being open and honest is crucial.

Should I report a near miss?

Yes. Near misses reveal weaknesses in systems before patients are harmed.

Can I refuse to give a medicine I think is unsafe?

Yes. Nurses have a professional responsibility to question prescriptions that seem unsafe and not to administer them until clarified. Escalate concerns through the appropriate channels.

What is an independent double check?

Two qualified practitioners separately and independently check the prescription, calculation, product and administration details, then compare results, rather than one person reading out and the other agreeing.

Are verbal orders safe?

Verbal orders increase the risk of misunderstanding and should be limited to emergencies or when written or electronic orders are impossible. Read back the order to confirm, and document it promptly.

But what can one nurse do if the system itself is unsafe?

More than you might think. Report every incident and near miss, because data drives change. Join or start a medication safety group on your unit. Suggest practical improvements such as quiet zones, standardised storage, and better labelling. Raise concerns about staffing and workload formally, linking them to safety. Mentor students and new graduates in safe practice. Nurses are the largest professional group in healthcare and see the medication process up close every day; when nurses lead on medication safety, systems improve.

Related: Nursing documentation: legal standards · Nurse burnout: the complete guide

Sources: World Health Organization (Medication Without Harm Global Patient Safety Challenge, 5 Moments for Medication Safety, Global Patient Safety Action Plan 2021-2030), Institute for Safe Medication Practices (high-alert medications list), National Coordinating Council for Medication Error Reporting and Prevention, Institute of Medicine “To Err Is Human”, Reason J (Human error: models and management), Westbrook et al. studies on interruptions and medication errors.