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General information only — not legal advice. Published by Edward & Amaury Solicitors, solicitors regulated by the SRA (no. 800525). How that affects what you read.

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Medication Error Claims

England & WalesLast reviewed 18 September 2026

A medication error claim arises when a prescriber, pharmacist or nurse gives, prescribes or dispenses the wrong drug or dose, or misses an allergy or interaction, and you are harmed as a result. You must show both a breach of the professional standard and that it caused injury.

Where Errors Occur

Medication errors happen at three stages: prescribing (wrong drug, dose, or failure to check allergies and interactions), dispensing (the pharmacy supplies the wrong item or strength or mislabels it) and administration (a nurse or carer gives the wrong medicine, or at the wrong time). Failure to monitor a high-risk drug with blood tests is a further recognised category.

Proving a Claim

Direct Answer: You must show the professional fell below the standard of a reasonably competent prescriber, pharmacist or nurse, and that the error caused a specific injury that would not otherwise have occurred.

Medical and pharmacy records, the prescription and dispensing labels, and expert evidence on the standard and on causation are central. Keep the packaging and any remaining medicine, and photograph labels.

Candour and Reporting

Registered providers must be open about notifiable safety incidents under the duty of candour. Errors can also be reported to the provider's safety systems and to the regulator, though these routes do not award compensation.

Frequently Asked Questions

Can I claim if a pharmacy gave me the wrong medicine?

Yes, if the error fell below the standard of a reasonably competent pharmacist and you suffered harm as a result. You will need the dispensing record, the wrong item or label, and medical evidence of the injury.

What if I had a known allergy that was ignored?

Prescribing a drug to which a patient has a recorded allergy is a classic breach, if the allergy was documented or should have been asked about. The claim then turns on the harm the reaction caused.

Can I claim if no harm resulted?

No. Negligence requires damage. A dosing error that caused no injury is not compensable, though it may still be a reportable incident.

What is the duty of candour?

A legal duty on registered providers to tell patients promptly and openly about notifiable safety incidents and apologise. It supports, but does not replace, a legal claim.

How long do I have to bring a medication error claim?

Generally three years from the date of the negligent act or, if later, your date of knowledge: when you first knew the injury was significant and connected to the care you received. The clock works differently for children, who usually have until three years after their 18th birthday, and for people who lack mental capacity. A court has a limited discretion to allow late claims, but you should not rely on it.

Can I bring a clinical negligence claim on a no win no fee basis?

Usually, if a solicitor thinks the claim has reasonable prospects, because legal aid is not generally available for clinical negligence. Expert reports are a large cost, so many claimants also take out after-the-event insurance. Ask your solicitor how disbursements are covered, and how QOCS protects you from the other side's costs if you lose.

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Where this applies: This page covers England and Wales. The rules in Scotland and Northern Ireland are different.

Sources for this page

Every rule stated above is based on the primary sources below. Each link goes to the legislation, court rule or regulator itself so you can check it. Last verified 18 September 2026.

  1. Courts and Legal Services Act 1990, s.58 (conditional fee agreements)

    The provision that makes CFAs lawful and enforceable. CFAs derive from this section, not from LASPO.

  2. Conditional Fee Agreements Order 2013, arts. 4–5 · in force from 1 April 2013

    Art. 4 caps the success fee at 100% of base costs. Art. 5 caps what may be taken from damages in personal injury at 25% of PSLA plus past pecuniary loss, net of CRU, at first instance.

  3. Civil Procedure Rules, Part 44 (incl. rr.44.13–44.17, QOCS)

    Qualified one-way costs shifting and its exceptions. Rule 44.14 was amended with effect from 6 April 2023.

  4. Limitation Act 1980, s.11 (personal injury actions)

    Three years from the date of the accident or the date of knowledge. Property damage such as a damaged vehicle is a separate claim with a longer six-year period under s.2.

  5. Limitation Act 1980, s.14 (date of knowledge)

    The three-year period can run from the 'date of knowledge': when you first knew the injury was significant and attributable to the act or omission alleged to be negligent. Central in delayed-diagnosis cases.

  6. Limitation Act 1980, s.33 (discretionary exclusion of time limit)

    A court can allow a personal injury claim to proceed out of time where it is equitable to do so. It is a discretion, not a right, and should not be relied on.

  7. Health and Social Care Act 2008 (Regulated Activities) Regulations 2014, reg. 20 (duty of candour)

    Registered providers must tell patients openly and promptly when a notifiable safety incident has occurred and apologise.

  8. NHS Resolution

    Handles clinical negligence claims against NHS trusts in England under the Clinical Negligence Scheme for Trusts.

Who wrote and checked this page

Written and published by
Edward & Amaury Solicitors (Edward & Amaury Ltd, company no. 12195443), regulated by the Solicitors Regulation Authority under no. 800525.
Legal review
Checked for England & Wales by Edward & Amaury Solicitors — Solicitors regulated by the SRA (no. 800525) (verify on the regulator’s register).Review is recorded against the firm. The individual reviewer is not named on this page.
Review dates
Last reviewed 18 September 2026. Next review due 18 March 2027.

Fee rules change. California’s medical malpractice fee limits changed on 1 January 2023, and the QOCS rules in England and Wales changed on 6 April 2023. If you spot something out of date, tell us — we publish corrections.

Think you have a claim? Find out for free.

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Where this applies: This page covers England and Wales. The rules in Scotland and Northern Ireland are different.

Sources for this page

Every rule stated above is based on the primary sources below. Each link goes to the legislation, court rule or regulator itself so you can check it. Last verified 2 August 2026.

  1. Courts and Legal Services Act 1990, s.58 (conditional fee agreements)

    The provision that makes CFAs lawful and enforceable. CFAs derive from this section, not from LASPO.

  2. Conditional Fee Agreements Order 2013, arts. 4–5 · in force from 1 April 2013

    Art. 4 caps the success fee at 100% of base costs. Art. 5 caps what may be taken from damages in personal injury at 25% of PSLA plus past pecuniary loss, net of CRU, at first instance.

  3. Legal Aid, Sentencing and Punishment of Offenders Act 2012, ss.44–46 · in force from 1 April 2013

    Ended recoverability of success fees and ATE premiums from the losing party. Did not create or regulate CFAs.

  4. Civil Procedure Rules, Part 44 (incl. rr.44.13–44.17, QOCS)

    Qualified one-way costs shifting and its exceptions. Rule 44.14 was amended with effect from 6 April 2023.

Who wrote and checked this page

Written and published by
Edward & Amaury Solicitors (Edward & Amaury Ltd, company no. 12195443), regulated by the Solicitors Regulation Authority under no. 800525.
Legal review
This page has not yet been through independent legal review. It is written from the primary sources listed below, which you can check directly.
Review dates
Last reviewed 2 August 2026. Next review due 2 February 2027.

Fee rules change. California’s medical malpractice fee limits changed on 1 January 2023, and the QOCS rules in England and Wales changed on 6 April 2023. If you spot something out of date, tell us — we publish corrections.