Expression of Concern: Early intervention with ColdZyme mouth spray after self-diagnosis of common cold: A randomized, double-blind, placebo-controlled study.

PLoS One · 2026 · PMC13271471 · PMID 42301993

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did not reach statistical significanceno p-value reported

There is also an emphasis on exploratory outcomes that are favorable to Coldzyme, including some that did not reach statistical significance.

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