Does robitussin make you feel better? new study investigates

NCT ID NCT06716645

Completed Symptom relief Sponsor: HALEON Source: ClinicalTrials.gov ↗

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

Summary

This completed study looked at how two different Robitussin cough syrup regimens affect quality of life in 244 adults with coughs from the common cold. One group used a single daytime/nighttime syrup, while the other used separate daytime and nighttime syrups. Researchers measured changes in symptoms and daily functioning using a standard cold questionnaire.

What this could mean

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

Active substance: Dextromethorphan and guaifenesin (daytime); dextromethorphan and doxylamine (nighttime)
What this could lead to: If the results are positive, this could confirm that these over-the-counter cough syrups help people feel better and function more normally while they have a cold.
What could go wrong: This is a completed real-world study, not a tightly controlled trial, so results may be influenced by factors like how people naturally recover from a cold. The findings are unlikely to change standard care.

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

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Conditions

The condition(s) this trial relates to.

common cold Cough

As listed by the trial registrant

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

COMMON COLD COUGH

Contacts and locations

Locations

Lindus Health Limited

New York, New York, 10017, United States

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Other studies related to the condition(s) this trial covers.