Mother’s Psychiatric Injury Claim Over Fatal Morphine Overdose Survives Court Challenge

What happened to Juanita?

In Esther Boate v Twin Ventures International Limited (trading as Millenium Pharmacy) and Vassall Medical Centre [2026] EWCC 66, judgment dated 23 October 2026, His Honour Judge Holmes considered applications by both defendants to strike out the claim or obtain summary judgment.

Juanita was born in May 2020 with complex congenital conditions and was discharged home under a palliative care plan. The plan included morphine solution to be administered through a naso-gastric tube when required for pain or distressed breathing.

The intended solution was 100 micrograms per millilitre. The judgment records that the prescription referred to a 100 micrograms per millilitre solution, while the pharmacy dispensed a higher concentration without specifying the volume to be administered. The resulting concentration was approximately 20 times higher than intended.

On 3 September 2020, Juanita’s mother, Esther Boate, administered the supplied morphine. Juanita immediately collapsed and stopped breathing normally. She later suffered respiratory arrest, required urgent treatment and intubation, and died six days later. Ms Boate alleges that she developed post-traumatic stress disorder and severe depressive disorder as a result.

1. 12 May 2020 Juanita was born with complex congenital conditions and later discharged home under a palliative care plan.
2. 3 September 2020 Ms Boate administered the morphine; Juanita suffered an acute reaction and was taken for emergency treatment.
3. Six days later Juanita died. The inquest recorded the medical cause of death as her congenital conditions following accidental morphine overdose.
4. 25 September 2026 The County Court heard the defendants’ applications.
5. 23 October 2026 HHJ Holmes handed down judgment and dismissed the applications.

What was the legal issue?

The claim is brought by Ms Boate as a secondary victim seeking damages for psychiatric injury. The defendants relied on the Supreme Court’s decision in Paul v Royal Wolverhampton NHS Trust [2024] UKSC 1, which clarified the limits of secondary-victim claims arising from witnessing a close relative’s death or injury.

In Paul, the Supreme Court distinguished accidents from medical crises arising from an illness that should have been diagnosed or treated earlier. A claimant generally cannot establish a secondary-victim claim merely by witnessing the later consequences of a negligently untreated medical condition; the claim must satisfy the legal requirements for witnessing an accident or its immediate aftermath.

The defendants argued that Ms Boate had carried out a familiar care task: administering medication through a naso-gastric tube. They submitted that this act was not an accident within the meaning of Paul, even though the concentration of morphine produced a different and devastating outcome.

Ms Boate argued that the administration of the wrongly concentrated morphine was an accident and that the question should be determined at trial rather than disposed of summarily.

How did the judge apply Paul?

HHJ Holmes accepted that the Supreme Court’s accident test was binding. The judgment explains that an accident is an unexpected and unintended external event which causes, or has the potential to cause, injury. The issue was whether administering a substance into the body through a naso-gastric tube could amount to such an event.

The judge considered the Supreme Court’s discussion of a hypothetical medical setting involving a doctor injecting a patient with the wrong dose or wrong drug. That discussion did not establish that an injection necessarily qualifies as an accident, but HHJ Holmes considered that it left the issue open for determination.

“There is a real prospect that a court could conclude that the administering of medication” may qualify as an external event capable of causing injury.

The judge reasoned that an injection could meet the relevant threshold and saw no basis, at this stage, to distinguish it from administering medication through a naso-gastric tube. This was a provisional assessment of the claim’s prospects, not a final ruling that every medication error constitutes an accident for secondary-victim purposes.

Why did the immediate reaction matter?

The judgment acknowledged the defendants’ argument that Ms Boate had administered medication in the same way on previous occasions and believed she was carrying out a therapeutic task. She could not reasonably have anticipated that the act would harm Juanita at the moment she administered the morphine.

However, HHJ Holmes considered that this was not necessarily decisive. If the reaction was immediate or almost immediate, and there was an immediate or almost immediate connection between the administration of the morphine and Juanita’s acute reaction, the circumstances could fall within the accident definition in Paul.

The judge also distinguished the claim from cases where relatives witness the consequences of an illness that could have been prevented. Here, Ms Boate was an integral part of the palliative care plan and had administered the substance that was allegedly made toxic by the prescribing and dispensing errors. The judgment considered that the doctor and pharmacist must have known the medication would be administered by her.

Those observations informed the conclusion that the claim should not be dismissed before the evidence had been heard. Whether the facts can ultimately be established, and whether the legal analysis will be accepted at trial, remain open questions.

What did the court decide?

The court was not deciding whether the defendants were negligent or whether Ms Boate had proved her psychiatric injuries. It was deciding whether the claim should be ended at an early stage through strike-out or summary judgment.

HHJ Holmes concluded that there was a real prospect of the claim succeeding. He therefore dismissed both defendants’ applications. The factual issues and the ultimate application of the law must await trial.

For solicitors handling clinical negligence and psychiatric injury claims, the judgment highlights the importance of examining the precise event alleged to have caused injury, the timing of the reaction, and the claimant’s involvement in the events. It also illustrates that a claim based on a medication error may raise a distinct question from one based only on witnessing the progression of an underlying illness.