Acne drug may leave you Nose-Blind: study investigates
NCT ID NCT07309341
First seen Jun 27, 2026 · Last updated Jul 14, 2026 · Updated 4 times
Summary
This study looks at whether isotretinoin, a common acne medicine, changes how well people can smell. Researchers will test the sense of smell in 54 adults before and after at least 4 weeks of treatment. The goal is to understand if the drug's drying effect on the nose can reduce smell ability.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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54 people
The number who actually took part.
- Started
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Jun 2025
- Finished
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Jul 2026
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 45 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Diagnosed with acne and scheduled to start oral isotretinoin as part of routine dermatology care * Willing to participate and able to give informed consent * Not currently smoking * No history of allergic rhinitis, sinusitis, or active upper respiratory infection * No medical condition known to affect the sense of smell Exclusion Criteria: * Younger than 18 years or older than 45 years * Current cigarette smoking * History of chronic sinonasal disease * Any condition that would prevent completing the smell test * Not willing to continue participation or withdrawal of consent at any time
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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.
Contacts and locations
Locations
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Uşak University Faculty of Medicine
Uşak, Merkez, 64300, Turkey (Türkiye)
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Other studies related to the condition(s) this trial covers.
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