Could a dissolved allergy tablet replace the old nasal test for birch pollen?

NCT ID NCT06085963

Completed Knowledge-focused Sponsor: Karolinska Institutet Source: ClinicalTrials.gov ↗

First seen Jun 26, 2026 · Last updated Jun 26, 2026

Summary

This completed study tested whether a dissolved allergy tablet (Itulazax) can be used as a nasal spray to diagnose birch pollen allergy. 89 participants received either the dissolved tablet or a saltwater spray, and their nasal symptoms and airflow were measured. The goal was to see if this new method works as well as the old test, which is no longer available.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: dissolved Itulazax (birch pollen extract) tablet
What this could lead to: If successful, this could provide a new, easier-to-use nasal test to confirm birch pollen allergy and motivate patients for treatment.
What could go wrong: This is a small, completed feasibility study, not a treatment trial. The new test may not work as well as the old one, and results may not apply to all patients.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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