Prescription Error Claims — Medication Mistake Compensation
Last reviewed: June 2026 · EA Personal Injury Solicitors
If you have been harmed by a prescription error — whether a wrong drug, wrong dose, dangerous drug interaction, or dispensing mistake — you may have a medical negligence claim against the prescribing doctor, dispensing pharmacist, or hospital. To succeed, you must show the professional's error fell below the required standard of care and caused avoidable harm. No win, no fee is available for eligible claims.
TL;DR — Quick Summary
Key Points
- Prescription errors include wrong drug, wrong dose, contraindicated drug, and dispensing mistakes.
- Liability may attach to the prescribing doctor, dispensing pharmacist, or hospital.
- Expert evidence from a pharmacist expert is typically required.
- You must prove both substandard care and that it caused avoidable harm.
- Three-year limit from the error or from the date of knowledge.
- No win, no fee is available for eligible claims.
Types of Prescription Error
Prescription errors can occur at several stages of the medicines process:
- Prescribing errors: The doctor prescribes the wrong drug, prescribes a drug at the wrong dose, fails to check for known contraindications (conditions in which the drug should not be used), or fails to identify a dangerous interaction with other drugs the patient is taking.
- Dispensing errors: The pharmacist dispenses a different drug, a different dose or strength, or a different quantity than prescribed. Labelling errors can cause patients to take medication at the wrong frequency or time.
- Administration errors: In hospital settings, a nurse or healthcare assistant administers the wrong drug, the wrong dose, or administers a drug by the wrong route (for example, intravenously when it should be oral).
- Monitoring errors: Some drugs require regular monitoring of blood levels or organ function. Failure to carry out or act on monitoring results can constitute negligence if it allows harm to develop that would otherwise have been avoided.
Who Bears Responsibility?
Responsibility for a prescription error depends on where in the chain the error occurred:
- GP or hospital doctor: For errors in prescribing — wrong drug, wrong dose, failure to identify contraindications or interactions.
- Pharmacist: For dispensing errors — wrong drug or dose handed to the patient. Pharmacists have an independent duty to check prescriptions for clinical appropriateness, not merely to dispense mechanically.
- Hospital or NHS trust: As the employer of the doctor or nurse who made the error.
- Pharmacy business: As the employer of the dispensing pharmacist.
Evidence Required
Prescription error cases typically require:
- Your GP and hospital medical records and prescription history
- The original prescription (if available) and dispensing records
- Expert evidence from a pharmacist on whether the prescribing or dispensing fell below the required standard
- Expert evidence from a relevant medical specialist on whether the error caused the harm you suffered
Compensation
Compensation for a prescription error claim covers general damages for pain, suffering, and loss of amenity caused by the harm, and special damages for past and future financial losses — including additional medical treatment costs, lost earnings if the harm affected your ability to work, and the cost of any care or assistance required as a result of the error.