Prescription Error Claims

At Crimmins Howard Solicitors, we understand the worry and uncertainty that can follow a medical mistake. We’ve supported people across Clare and the west of Ireland who were left to deal with the consequences of avoidable errors in prescribing. Some were left seriously unwell. Others saw their conditions worsen because the right treatment was delayed. In every case, they deserved answers—and the chance to put things right.

If you’ve been harmed by a prescription mistake, speak to our team today for clear advice and caring support. Let’s start with a conversation.

What Is a Prescription Error? 

A prescription error is a mistake made during the process of prescribing, preparing, or providing medication. It can happen at any point between the doctor writing the prescription and the patient taking the medicine. These errors may involve the wrong drug, the wrong dose, the wrong instructions, or failure to take account of a patient’s medical history.

Errors can originate with the GP, a hospital doctor, a specialist, or during pharmacy dispensing. They might also stem from communication failures between professionals, outdated patient information, or inadequate record-keeping.

Not all errors are immediately obvious. Some are only identified when a patient queries a change, a pharmacist raises a concern, or another clinician spots an inconsistency in care.

The term ‘prescription error’ covers both human mistakes and system failures — including lapses in protocols, software design flaws, or lack of proper checking mechanisms. In many cases, more than one party may have had a role in the error occurring.

Understanding the nature of prescription errors is the first step in identifying where things went wrong and whether the issue stems from negligence, miscommunication, or flawed processes.

Types of Prescription Errors 

Prescription errors come in several distinct forms, each with its own mechanism of failure. Understanding these categories is key to identifying the root cause of a mistake and determining who may have contributed to it. Below are the most common types seen in Irish healthcare settings:

• Wrong Medication Prescribed: A doctor may select the incorrect drug altogether, often due to misdiagnosis, confusion over drug names, or selection errors in electronic systems. This may result in a medicine that is ineffective for the condition or inappropriate for the patient’s profile.
• Incorrect Dosage: This includes prescribing too high or too low a dose. It might involve milligram errors, dosing frequency mistakes, or improper duration of treatment. Errors with weight-based dosing are common in paediatrics.
• Duplicate or Conflicting Medications: Sometimes a patient is prescribed two or more drugs that serve the same purpose, leading to accidental overdose or compounding of effects. Alternatively, prescribed drugs may interact harmfully with each other.
• Unconsidered Allergies or Pre-existing Conditions: If a prescriber fails to check a patient’s allergy history or overlooks a condition such as renal disease, the drug chosen may trigger a preventable adverse reaction.
• Omitted or Incomplete Instructions: A prescription lacking full directions—such as when and how to take the medicine, or whether it should be taken with food—can lead to incorrect use, even if the drug itself is suitable.
• Transcription and Data Entry Errors: Mistakes during manual or electronic transfer of prescriptions can result in wrong details being recorded. Common examples include decimal place errors, name mix-ups, and illegible handwriting.
• Dispensing Errors by Pharmacists: Pharmacists may misread prescriptions or provide the wrong formulation or strength. Though distinct from prescribing errors, these can also be categorised within the broader umbrella of prescription error when they stem from miscommunication or unclear instructions.

Each of these categories reflects a breakdown at a different point in the prescribing chain. Effective review and monitoring mechanisms are essential for catching these errors before they reach the patient.

Where and How Prescription Errors Happen

Prescription errors can occur in a wide range of settings, from busy hospital wards to quiet GP clinics and community pharmacies. Each step in the medication process—prescribing, transcribing, dispensing, administering, and monitoring—presents opportunities for mistakes to slip through. Below is an overview of where these failures typically arise:

• GP Clinics: In general practice, time pressures and incomplete medical histories are frequent contributors. A GP might prescribe a drug without full access to a patient’s allergy record or overlook a contraindication due to rushed consultations.
• Hospitals (Public and Private): Hospitals are complex environments where multiple doctors, nurses, and pharmacists are involved in patient care. Errors may arise from poor communication during shift handovers, misreading handwritten notes, or system errors when entering prescriptions into digital systems. In some cases, junior doctors may be unsure about correct dosages, especially with high-risk drugs.
• Emergency Departments: A&E settings are fast-paced and under-resourced. Doctors often make split-second decisions, sometimes without complete information. This can result in misjudged prescriptions, particularly when treating pain, infection, or acute illness.
• Community Pharmacies: Pharmacists might misinterpret prescriptions due to illegibility, ambiguous instructions, or lookalike-soundalike drug names. Dispensing the incorrect strength or form of a drug is not uncommon, especially during busy periods.
• Residential and Nursing Home Settings: In elderly care settings, prescription errors may stem from poor record-keeping or outdated medication charts. Changes in prescriptions are not always clearly communicated, and staff may administer incorrect doses due to unfamiliarity with new drugs or poor training.

Across all of these environments, communication breakdowns are a recurrent theme. Whether between healthcare providers, between staff and patients, or through flawed electronic systems, missed information or misinterpretation often lies at the heart of a prescription error.

Who May Be Liable for a Prescription Error?

Establishing who is responsible for a prescription error is a critical step in building a strong negligence claim. Liability may not rest with just one individual or institution—it can span several professionals across the care chain. Here’s a breakdown of who may be held accountable depending on where and how the error occurred:

• Prescribing Doctor: The doctor who issues the prescription bears a legal duty to ensure the medication is appropriate for the patient’s condition, allergies, and any existing treatments. If they prescribe the wrong drug, wrong dose, or fail to account for potential interactions, they may be liable.
• Consultants and Specialists: In hospitals, consultants may take over or revise a GP’s prescription. If a senior clinician fails to review a drug properly or overlooks test results indicating a contraindication, this may also form the basis for a claim.
• Hospital Pharmacists: Pharmacists are tasked with checking prescriptions for accuracy before dispensing. If a pharmacist dispenses the wrong drug or dose, or overlooks an obvious interaction or allergy warning, they can be held responsible.
• General Practice Staff: Practice nurses or administrative staff who transcribe or issue repeat prescriptions without clinical review may contribute to an error. If mistakes arise from incorrect transcription or poor verification protocols, the GP practice itself may share liability.
• Nursing Staff and Carers: Nurses and carers who administer medications must follow the instructions exactly. Giving a drug at the wrong time, in the wrong quantity, or to the wrong patient can have severe consequences. If errors occur during administration, liability may rest with the care provider or healthcare institution.
• Pharmacies: Community pharmacists are expected to verify prescriptions, check dosages, and counsel patients. If they dispense the wrong product or fail to flag issues, the pharmacy may be liable.

Each of these parties has a defined role in safeguarding patient health. A prescription error claim must carefully investigate all steps to identify where negligence occurred and who is legally responsible.

Proving Negligence in a Prescription Error Claim

To succeed in a prescription error claim, it is not enough to show that a mistake occurred. You must prove that the error amounted to negligence—in other words, that a healthcare provider failed in their legal duty of care, and that this failure caused harm.

The three core elements to establish are:

• Duty of Care: All medical professionals owe a duty of care to their patients. This includes prescribing the correct medication, dispensing it accurately, and ensuring the patient understands how and when to take it. This duty also covers the need to review medical records, monitor interactions, and watch for signs of harm.
• Breach of Duty: A breach happens when the care provided falls below the expected standard. For example:
  • Prescribing a medication the patient is allergic to.
  • Issuing a dangerously high dosage.
  • Overlooking a known interaction with another drug.
  • Failing to monitor a patient on high-risk or long-term medication. Evidence of a breach is often supported by expert medical opinion comparing the conduct to what a competent professional would have done.
• Causation and Harm: It must be shown that the breach directly caused injury or illness. This can include worsening of an existing condition, development of a new condition (e.g. liver or kidney damage), or psychological trauma. Medical reports, hospital records, and witness statements can all be used to link the negligent act to the resulting harm.

Without clearly linking these elements, a claim may fail—even if a mistake was made. Crimmins Howard Solicitors work with trusted independent medical experts to assess your case thoroughly. We take care to gather the right evidence and present it with clarity so you have the strongest possible claim for justice and fair compensation.

How Do I Prove a Prescription Error Occurred? 

To succeed in a prescription error claim, the foundation of your case must be solid evidence. At Crimmins Howard Solicitors, we help clients gather the right documentation to clearly show that a mistake happened and that it led to avoidable harm.

The types of evidence typically required include:

• Medical Records: Your full treatment history is critical. These records show what was prescribed, by whom, and when. They also reveal any previous medications or conditions that should have been factored into the prescribing decision.
• Pharmacy Dispensing Records: If the error happened at the dispensing stage, such as the wrong drug or dose being supplied, the pharmacy’s logs will help establish exactly what was handed over. This includes printed labels, dosage instructions, and timestamps.
• Prescriptions and Repeat Slips: Physical copies or electronic records of prescriptions are used to cross-check what was intended versus what was given. If there’s a mismatch, it can show where the error occurred.
• Expert Medical Opinion: An independent medical expert will review your case to confirm if the standard of care was breached and if the medication error caused or worsened your condition. Their report carries significant weight in legal proceedings.
• Photographs or Medication Packaging: In some instances, a patient may have retained the packaging, which can offer visual proof of incorrect labelling or instructions.
• Correspondence and Incident Reports: Emails, letters of complaint, or hospital incident documentation can help illustrate how the error came to light and how it was handled.

Collecting and presenting this evidence accurately is vital to building a strong case. We guide our clients through every step to ensure nothing is overlooked.

How Long Do I Have to Make a Prescription Error Claim in Ireland?

In Ireland, the standard time limit for making a prescription error claim is two years from the date you first knew, or ought reasonably to have known, that a mistake had been made and that it caused you harm. This is referred to legally as the “date of knowledge.” It means that the clock does not necessarily start ticking on the date the error occurred, but rather when you became aware of its consequences. In many cases, people only learn about the cause of their symptoms or complications after further medical investigation, which may take weeks or even months.

If the error involved a child, the two-year limit only begins on their 18th birthday. In other words, a parent or guardian can bring a claim on their behalf any time before they turn 18, and the child themselves has until the age of 20 to initiate proceedings. For individuals who lack mental capacity, the time limit may be paused entirely until they are deemed capable of pursuing legal action.

Because of these variations, it’s important not to delay. If you believe a prescription error has affected your health or a loved one’s, early legal advice can help protect your right to pursue compensation.

Common Types of Evidence in Prescription Error Claims 

Building a strong prescription error claim relies heavily on the availability and quality of evidence. The more clearly the chain of events can be traced—from prescription to harm—the more likely it is that liability can be proven. Solicitors specialising in medical negligence will focus on gathering specific categories of information to support your case.

Important types of evidence include:

• Medical Records: These are central to any claim. They show what medication was prescribed, when it was administered or dispensed, and whether appropriate instructions were provided. They may also indicate prior warnings, such as known allergies or existing conditions that should have been considered.
• Prescription Documentation: The original prescription slip, electronic prescription, or pharmacist’s label will help verify whether the correct medication, dosage, and instructions were recorded. Discrepancies between what was prescribed and what was dispensed are often pivotal.
• Pharmacy Logs and Dispensing Records: These logs detail when and by whom medication was dispensed. They may include notes about consultations with patients or interactions regarding medication use, particularly in community pharmacy settings.
• Expert Medical Opinion: An independent medical expert is usually instructed to assess whether the care you received breached the accepted standard and whether it caused harm. Their report often becomes the backbone of a negligence case.
• Photographs or Physical Evidence: In cases involving visible harm, such as a rash or injury, dated photographs can help establish the extent of the damage caused. Retaining unused medication or incorrect packaging may also support your claim.
• Witness Testimony: Statements from family members, pharmacists, or other treating clinicians who observed the events can help provide a fuller picture.

Gathering this evidence early can make all the difference. It allows your solicitor to assess the likelihood of success and begin building a case that reflects the true impact of the prescription error on your health and quality of life.

How to Begin a Prescription Error Claim in Ireland

Starting a claim for harm caused by a prescription error in Ireland begins with understanding your legal position and gathering the right support. The process is structured, but it can feel daunting—especially if you’re recovering from the consequences of the error. At Crimmins Howard Solicitors, we guide clients through each step with clarity, compassion, and precision.

The first step is to contact a solicitor experienced in medical negligence. During an initial consultation, we will listen to your experience and assess whether the error likely amounts to negligence under Irish law. If so, we’ll begin collecting relevant records and expert opinion to back your claim.

From there, your solicitor will:

• Obtain your full medical history and prescription details, including GP and hospital notes, pharmacy records, and any related correspondence.
• Request an independent medical expert report, which will help determine if the prescribing, dispensing, or monitoring fell below accepted standards and if that failure led directly to harm.
• Issue a Letter of Claim to the responsible healthcare provider or institution, outlining the basis of your case, the evidence supporting it, and the injuries suffered as a result.
• Negotiate a settlement, if liability is accepted, or prepare court proceedings if the other side disputes the claim.

Throughout the process, your legal team will provide clear updates and support.