Clinical trial Recruiting at 1 site Early Phase 1 Interventional Ages 12 and up

Comparing weekly Isotretinoin to daily Tetracycline for moderate acne treatment

Official title: Randomized Controlled Trial of Weekly Oral Isotretinoin vs. Oral Tetracyclines for the Treatment of Moderate Acne Vulgaris

Run by Medical University of South Carolina · NCT06225570 · Data updated 2026-11-12

This study is testing if taking Isotretinoin once a week works better than taking Doxycycline every day for treating moderate acne in people aged 12 and older.

More Acne Vulgaris trials

Quick facts

PhaseEarly Phase 1
Study typeInterventional
Ages12 Years and up
SexAll
Enrollment50 (estimated)
SponsorMedical University of South Carolina
Academic / other
Locations1 site (Charleston, South Carolina)
StatusRecruiting
StartedFebruary 1, 2025
Main results expectedMarch 2027
Study endsMay 2027
Registry record updatedMay 18, 2026
Trial IDNCT06225570 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are males and females aged 12 years and older diagnosed with moderate acne vulgaris.

Probably not a fit

Patients currently on long-term antibiotics or with certain medical conditions, such as major depression or liver disease, may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical trial aims to evaluate the effectiveness and safety of weekly Isotretinoin dosing compared to daily Doxycycline for treating moderate acne vulgaris. The study will involve male and female participants aged 12 and older who have been diagnosed with moderate acne. Participants will receive either weekly Isotretinoin or daily Doxycycline over a four-month period, with assessments of acne improvement, side effects, and patient satisfaction. The trial builds on previous promising findings regarding weekly Isotretinoin dosing, seeking to validate its potential as a safer alternative to long-term antibiotic use.

Why it matters

Potential benefit: If successful, this study could provide a new, effective treatment option for patients with moderate acne that minimizes the need for long-term antibiotics.

How similar studies have gone: Previous studies have shown promising results with low-dose Isotretinoin for mild to moderate acne, but this specific weekly dosing approach is novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

\- Male and Female patients, 12 years and older with a diagnosis of Moderate Acne Vulgaris

Exclusion Criteria:

* Patients who are at baseline on long-term Tetracycline antibiotics, long-term Trimethoprim-Sulfamethoxazole, or on Spironolactone for any reason
* Patients who have taken Isotretinoin in the past 6 months
* Patients with hypersensitivity to Isotretinoin or to any of its components
* Females who are pregnant, likely to become pregnant, or will be breast-feeding during the study period
* Patients with a history of major depression, mania, or psychosis with an active episode during the past year including current psychotic symptoms and/or current suicidal ideation
* Adult patients with cognitive impairment
* Patients with baseline kidney or liver disease
* Patients with baseline hypertriglyceridemia
* Patients with history of or current pseudotumor cerebri
* Patients with any clinically significant unstable medical condition which could pose a risk to the safety of the patient
* Inability or unwillingness of subject or legal guardian/representative to give informed consent

Where it's running

  • Medical University of South Carolina
    Charleston, South Carolina, United States
    Recruiting

Study contacts

  • Principal investigator: Alex Richmond, MD, MSCR — Medical University of South Carolina
  • Study coordinator: Kathryn Keller, BS
  • Email: kellerka@musc.edu
  • Phone: 8646301689

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.