Home โ†’ Guides โ†’ Care Home MAR and Prescription Mismatch: What to Do

What to do when a care-home prescription, label and MAR disagree

Stop the conflicting instruction from becoming the next administration

A GP changes a resident's dose in the afternoon. The home receives a phone message, but the dispensing label still shows the old dose. The MAR has not been updated, and the next medicine round is approaching. Staff may feel pressed to choose one document and carry on. The mismatch is a safety question that needs an authorised answer before the next affected dose, not a clerical task to finish after the round.

Identify the exact conflict. Which resident, medicine, strength, form, route, dose, time and start date are involved? Is the prescription a new order, a temporary hold, a change to a regular dose or a discontinuation? Does the message come directly from the prescriber, through a family member or from a discharge letter? Check the current clinical instruction through the home's agreed route. A MAR records what was administered and supports a safe round; it does not itself settle which prescription is now authorised.

Assess the timing and resident risk. When is the next dose due? What was the last dose actually taken? Has the resident already received a dose under the old instruction since the change was supposedly made? Is the medicine time-sensitive or high risk for this resident? Ask a prescriber or appropriate urgent clinical service for an instruction that deals with the immediate dose and any monitoring. Do not improvise a compromise amount between the old and new instructions. Do not silently skip a dose without an authorised plan where that could also create harm.

NICE SC1 expects clear written prescribing processes and accurate updates. For a change made by telephone, recommendation 1.9.7 says care-home staff should ensure the change is supported in writing before the next or first dose, ask the remote prescriber to change the prescription and update the MAR and care plan as soon as possible. CQC's MAR guidance says care-home staff should update records when medicines change and when correspondence about medicines arrives. These are coordinated safety steps, not permission to alter a dose from memory.

Establish which instruction is current and who issued it

Collect the source documents without overwriting any of them: the existing prescription, new written order or confirmation, dispensing label, MAR, care plan, pharmacy message and any hospital or specialist letter. Note when each was created and received. A newer piece of paper is not necessarily the operative instruction. A letter may describe a recommendation awaiting a GP prescription, while a label may be old because the medicine was dispensed before the change. The prescriber and supplying pharmacy can clarify how the change should be implemented.

Ask direct questions. Did the prescriber intend the new dose to start today or after a supply change? Was the existing medicine to be used in a different amount, or was a new formulation required? Was the old dose stopped immediately? Does the change apply to a PRN medicine or a regular one? Are monitoring or review requirements attached? What is the plan if the required supply has not arrived? The answer should be written clearly enough for a trained worker who was not part of the conversation to follow safely.

Verify identity carefully. Similar resident names, medicine names or strengths create a separate risk. Read back the resident, medicine, dose and timing during a phone clarification. Use secure channels for written confirmation and follow the home's confidentiality policy. Avoid relying on a screenshot forwarded through an informal personal messaging chain. NICE recommends that text-message details about medicines be handled through a defined process and that text messages be exceptional.

Do not treat the resident or family as the sole source of a prescribing change. They may accurately report what a clinician said and should be heard, but the care home needs an authorised clinical instruction that staff can administer. If the resident self-administers under an agreed plan, the change still needs to be reflected in the relevant care and medicine records. A clinician may need to discuss the change directly with the resident, including consent and preferences.

Manage a telephone or remote change safely

A phone call can help resolve an urgent question, but the written trail matters. NICE SC1 recommendations 1.9.6 and 1.9.7 say remote prescribing should be used only in exceptional circumstances, that the prescriber should ensure instructions are understood and send written confirmation as soon as possible, and that care-home staff should have written support before the next or first dose. The staff member receiving the call should record the prescriber's identity, time, exact instruction, resident and medicine details, read-back and any monitoring or review. Ask how the written confirmation will arrive and who will check it.

When the written confirmation arrives, compare it with the call note. If it differs, pause and clarify the difference. Do not change the MAR twice in quick succession based on assumptions. A clear answer must identify the operative dose and start time. If the next dose is imminent and confirmation has not arrived, escalate to the prescriber or appropriate urgent service. The plan may need a clinician's explicit direction for that dose. Staff should record the decision and the reason they could not rely on the documents as they stood.

NICE advises updating the MAR and care plan as soon as possible, usually within 24 hours, for medicine changes made through remote prescribing. That timing is not a licence to leave the old instruction on the MAR during a dose that occurs sooner. The immediate round must have a safe authorised instruction and a clear handover. The later administrative update should reconcile the whole record so tomorrow's staff do not face the same conflict.

Set a named owner for follow-through. A call made at 17:00 may be heard by one senior worker and forgotten at shift change. The handover should state what was confirmed, where the writing is stored, which MAR entry was changed, whether the label still differs, what to do at the next dose and who will contact the pharmacy. If a task remains open, give a deadline tied to the next administration, not an arbitrary end-of-week date.

Reconcile the MAR, label, care plan and supply

Once the authorised instruction is clear, update each relevant record through the home's controlled process. The MAR should show the current medicine, strength, dose, route, timing and start or stop date. The care plan should explain any support, monitoring or reason for a time-sensitive change. The pharmacy should know what supply and label are needed. If the current pack carries old directions, ask the pharmacist how it should be managed and what label or replacement is required. Do not relabel a dispensed medicine informally.

CQC's medicines reconciliation guidance describes reconciliation when treatment changes, including dose changes and new medicines. It calls for a current list, comparison with what the person is taking, resolution of discrepancies and documentation of changes. Trained, competent staff should do the reconciliation with professional input. The MAR should then be checked for accuracy. The purpose is a coherent, resident-specific medicine picture, not simply matching two numbers on a screen.

If the change occurs mid-cycle, identify which entries belonged to the old instruction and which belong to the new one. CQC's MAR guidance advises making a new entry for a mid-cycle change in home care and says care-home staff should keep records current. A care home's paper or electronic process should preserve the date and author of the change. Only trained and assessed staff should make and check changes. An exceptional handwritten new MAR needs the safeguards CQC describes, including a second trained check before use.

Check stock against the new plan. A dose increase may mean the current supply runs out early. A dose decrease may leave surplus medicine. A new formulation may make the old pack unsuitable. Contact the supplying pharmacy and prescriber before borrowing another resident's medicine or trying to alter a formulation. NICE says medicines prescribed for one resident must not be used for another. Record any ordering, return or disposal in the proper process. Do not create a fictitious MAR entry to make stock appear consistent.

Protect the resident if the mismatch has already affected a dose

Sometimes the discrepancy is found after a dose was given under the wrong or uncertain instruction. Move from reconciliation to a resident safety incident. Check the resident, identify exactly what was administered and when, and seek medicine-specific clinical advice. The prescriber or urgent service needs the old and new directions, the actual administered dose, the resident's condition and any monitoring already in place. A general article cannot tell staff whether a particular dose was harmful or how to correct it.

Keep an accurate MAR entry for what was actually given. Correct errors using the approved traceable method, not a retrospective fiction. Record the incident, professional advice, observations, communication and follow-up. NICE SC1 asks providers to identify, report, review and learn from medicines errors, including near misses. An error that was caught before administration can still expose a weak information flow worth fixing.

Consider resident and representative communication, safeguarding, candour and CQC notification according to the actual event. CQC's medicine incident guidance explains that a medicine error alone is not a separate notification category, while a resulting notifiable event may require one. A manager should document the threshold decision. Do not assume that every mismatch is notifiable, and do not assume that the absence of an immediate symptom means no follow-up is needed.

If the wrong instruction was issued or copied across several residents, expand the review promptly. Check whether the same prescriber message, pharmacy feed, printed MAR or handover process affected others. Keep each resident's clinical decisions separate. The system investigation can examine a common cause, while individual clinicians assess each person's exposure.

Make the next round workable for staff

Walk through the revised instruction with the worker who will administer the next dose. Ask them to show the current MAR, written prescription confirmation, labelled supply and care-plan note. If one still conflicts, name the agreed clinical instruction and resolve the document or supply issue before relying on a verbal workaround. The next worker should not have to infer a dose from a manager's memory.

Use a clear status note during the transition. It might say that an old pack is not to be used until the pharmacist confirms it, or that a new MAR entry begins at a specified time. The note must come from the authorised clinical and medicines process, not a generic sticker. Remove obsolete instructions from active use while preserving the record of what they said. A superseded document should not remain at the front of the trolley as though it is current.

Include night and agency workers in the handover. A change that reaches only the regular day team can fail at the next shift. Confirm that staff can access the secure written instruction and know whom to call if an uncertainty remains. A short teach-back can show whether the instruction is understandable. If the worker cannot explain the new dose, timing and monitoring, the change is not yet operationally complete.

Check the first administration under the new plan through the normal competent process. Was the right supply available? Did the MAR show the correct entry? Was the actual administration recorded at the right time? Did any promised observation or monitoring occur? The first dose is a useful control point because it tests whether the prescription, pharmacy, care record and staff handover are aligned in practice.

Review why the information diverged

The cause may be a delayed written order, a pharmacy supply cycle, a handwritten MAR change, an unprocessed hospital letter, an unclear phone message or a shift handover gap. Reconstruct the timeline from the first decision to the discovered conflict. Who issued the change? Who received it? When was it put in writing? Who updated the MAR and care plan? When did the pharmacy receive it? Which staff saw each version before administering? This sequence can reveal the point where the information stopped moving.

Choose improvements that address that point. A shared inbox may need a named monitor, an out-of-hours route or a check that attachments reach the resident record. A MAR change may need a second competent check. A pharmacy handover may need a standard message containing the effective date and last dose. A manager may need to ensure that new instructions reach all shifts. A generic reminder to โ€œcheck the MARโ€ will not help if the MAR itself was not updated.

Test the fix. Review several later prescription changes, not just the original incident, to see whether written confirmation arrived before the affected dose and whether the MAR, care plan and supply were aligned. Include a change made outside normal hours. Record any residual mismatch and revise the process again. A governance action is not complete because a policy was rewritten; it is complete when staff can use the process safely.

Look at resident involvement. Did the person know the medicine was changing and why? Could they identify a discrepancy from their own routine? A resident may notice that a tablet looks different or is offered at a new time. A good process welcomes that question and checks it. Staff should not dismiss the person's observation because the MAR says something else.

Example: the dose was reduced but the old pack remains

A resident's prescriber tells the home by telephone that a regular dose should be reduced from the next morning. The senior worker notes the call and asks for written confirmation. The existing pack and MAR show the old dose. Before the morning round, the written confirmation arrives, but the replacement supply has not. The senior worker compares the confirmation with the phone note, contacts the pharmacist and prescriber about how the available medicine should be handled, and obtains an explicit instruction for the next dose. The MAR and care plan are updated through the home's controlled process. The night and morning teams receive the effective time and the remaining supply action.

If the writing does not arrive before the next dose, staff escalate rather than administering from a guessed interpretation. If the old dose was already given after the change was meant to start, they seek resident-specific clinical advice, record the actual administration and open an incident. The manager then checks why confirmation or record updates were delayed. The example does not say that a tablet can be split or that an old pack can always be used. Those are medicine and formulation decisions for the prescriber and pharmacist.

Where Complys may fit

The live Complys care home guide says Complys does not replace the clinical system for day-to-day medicines records. Public copy discusses policy, staff competence, audits and incident evidence. It does not verify prescribing, eMAR, pharmacy integration, label reconciliation or automatic clinical alerts. Product claims about those functions need direct verification.

If the actual product supports it, an administrative workflow might track that a medicines incident or audit action has an owner, deadline and evidence of closure. The resident's current prescription, MAR and clinical advice remain in the authorised care system. A compliance dashboard should not become a second, conflicting source of dosage instructions. Use references and permissions that fit the provider's information governance arrangements.

CTA: Review Complys for Care and ask how current policy, incident, audit and corrective-action workflows can support medicines governance alongside the home's clinical records. Related tool opportunity: A prescription-change reconciliation worksheet with the prescriber instruction, effective time, written confirmation, MAR update, label and supply check, resident communication, next-dose handover and first-dose verification. It must not authorise a dose or change a prescription. Suggested internal links out: Missed-dose response, MAR versus stock discrepancy, care home CQC guide. Suggested links in: Care home medicines section, future hospital-return reconciliation owner and any approved medicine-change checklist. Cannibalisation boundary: This page owns conflicting instructions after a prescription change before or around the next dose. Draft 71 owns a signed MAR entry conflicting with physical stock. Draft 70 owns a discovered missed scheduled dose. A hospital-return owner would focus on cross-setting discharge information, not routine in-home prescription changes.

Complys keeps the records, actions and evidence behind this workflow in one place.

See how Complys helps โ†’

Primary sources

  1. NICE SC1 recommendations: prescribing, remote changes, written confirmation, MAR and care-plan update, incident learning. Checked 27 September 2026.
  2. CQC medicines reconciliation: treatment change reconciliation, competent staff, source records and discrepancies. Checked 27 September 2026.
  3. CQC medicines administration records: accurate current MAR, care-home updates and exceptional handwritten record safeguards. Checked 27 September 2026.
  4. CQC reporting medicine-related incidents: resident safety and reporting branch if a wrong or uncertain dose reached the resident. Checked 27 September 2026.
  5. Live Complys care home guide: broad route and product boundary. Checked 27 September 2026.