New PKU drink tried in kids: will they drink it?
NCT ID NCT05995717
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested a special drink called PKU UP in 16 children with phenylketonuria (PKU) aged 1 to 10 years. The drink is designed to replace some of the protein they need while keeping their phenylalanine levels safe. Researchers checked how well the children tolerated the drink, whether they liked it, and if it helped control their condition over 26 weeks.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- PKU UP (a special medical food drink for managing PKU)
- What this could lead to
- If this product is well-tolerated, it could offer a more convenient and palatable dietary option for children with PKU, helping them stick to their diet and maintain better metabolic control.
- What could go wrong
- This was a small, single-arm study with only 16 children, so results may not apply to everyone. It tested acceptability, not long-term health outcomes, and the product may still cause gastrointestinal issues or be refused by some children.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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16 people
The number who actually took part.
- Started
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Jan 2024
- Finished
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Mar 2026
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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1 year to 10 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Diagnosis of PKU requiring a low-protein diet and protein substitute. * Participants who are adherent with their blood phenylalanine (Phe) testing, in the opinion of the investigator. * Participants aged 1-10 years. * Participants who in the opinion of the investigator are anticipated to be able to take at least half of their daily protein equivalent requirement from PKU UP (in order to assess this, a taste test (or similar) may be conducted at investigator's discretion as part of the screening process). * Willingly given, written, informed consent from the parent(s)/guardian(s). * Willingly given, written assent by the participant (if appropriate). Exclusion Criteria: * Inability to comply with the study protocol, in the opinion of the investigator. * Any co-morbidity, which, in the opinion of the investigator, would preclude participation in the study. * Diagnosis of persistent hyperphenylalaninemia, or mild PKU not requiring a low protein diet and protein substitute. * Allergy or intolerance to milk. * Participants who are currently participating in, plan to participate in or have participated in an interventional investigational drug, food or medical device study within 30 days prior to the screening visit. * Use of additional micronutrient supplements during the evaluation period, unless clinically indicated and prescribed by the Investigator (must be recorded in both the medical records and case report form).
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Birmingham Children's Hospital
Birmingham, B4 6NH, United Kingdom
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Great Ormond Street Hospital for Children NHS Foundation Trust
London, WC1N 3JH, United Kingdom
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Nottingham Children's Hospital
Nottingham, NG7 2UH, United Kingdom
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Royal Belfast Hospital for Sick Children
Belfast, BT12 6BE, United Kingdom
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Sheffield Children's Hospital
Sheffield, S10 2TH, United Kingdom
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St. Luke's Hospital
Bradford, BD5 0NA, United Kingdom
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University Hospitals Bristol and Weston NHS Foundation Trust
Bristol, BS2 8BJ, United Kingdom
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- French study tracks adult PKU patients to uncover hidden neurological risks
- New PKU drink passes small taste and tolerance test
- Can a One-Day allergy fix keep PKU patients on their meds?
- New medical food tolerability study for rare metabolic conditions
- PKU protein puzzle: study seeks personalized diet answers