Could a dissolved allergy tablet replace the old birch pollen test?
NCT ID NCT06085963
First seen Nov 01, 2025 · Last updated Jun 20, 2026 · Updated 30 times
Summary
This completed study tested whether a dissolved birch pollen allergy tablet (Itulazax) can be used as a nasal spray to confirm birch pollen allergy. 89 adults with birch pollen allergy received the spray and a placebo spray to see if it caused typical allergy symptoms like sneezing and stuffy nose. The goal is to find a replacement for an older test product that is no longer available.
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This is a summary of
the original study
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Contacts and locations
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Locations
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Karolinska University Hospital
Stockholm, 17176, Sweden
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
dissolved birch pollen extract tablet (Itulazax)
What this could lead to
If successful, this could provide a new, easier way for doctors to confirm birch pollen allergies and for researchers to test allergy treatments.
What could go wrong
This is a small, completed study testing a method, not a treatment. The new spray may not work as well as the older product, and results may not apply to all patients.
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.