New supplement tested for cough and phlegm relief

NCT ID NCT05544942

First seen Jun 27, 2026 ยท Last updated Jun 27, 2026

Summary

This study tested whether a supplement called GCWB1001 can help adults with mild breathing symptoms like cough, phlegm, and chest tightness. 120 people took either the supplement or a placebo for 12 weeks. The goal was to see if symptoms improved and if it was safe.

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Conditions

The condition(s) this trial relates to.

chronic bronchitis Signs and Symptoms, Respiratory

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Chungbuk national university hospital

    Taebuk, South Korea

  • HALLYM UNIV. Chuncheon MEDICAL CENTER

    Chuncheon, South Korea

  • Hallym Univ. Medical Center

    Gyeonggi-do, South Korea

  • Hanyang University Seoul Hospital

    Seoul, South Korea