Spironolactone versus doxycycline for acne in women

A randomized, double-blind, multi-center comparative effectiveness study of spironolactone versus doxycycline hyclate for the treatment of acne in women

['FUNDING_U01'] · UNIVERSITY OF PENNSYLVANIA · NIH-11169688

This trial compares two commonly used oral acne medicines—spironolactone and doxycycline—to find which helps adult women get clearer skin with fewer side effects.

Quick facts

Phase['FUNDING_U01']
Study typeNih_funding
SexAll
SponsorUNIVERSITY OF PENNSYLVANIA (nih funded)
Locations1 site (PHILADELPHIA, UNITED STATES)
Trial IDNIH-11169688 on ClinicalTrials.gov

What this research studies

If I join, I would be randomly given either spironolactone or doxycycline without knowing which one I receive, and clinicians at multiple sites will follow my progress. The study will measure changes in acne severity, record side effects, and collect samples to look at effects on the skin and gut microbiome. Researchers will compare how well each medicine clears acne and whether long-term antibiotic use is linked to adverse outcomes. The goal is to help patients and doctors choose safer and more effective oral treatment options.

Who could benefit from this research

Good fit: Women aged 21 and older with persistent moderate-to-severe acne who are willing to take oral medication and attend clinic visits are the ideal candidates.

Not a fit: People who are pregnant or planning pregnancy, those with only mild acne, men, or anyone with contraindications to either drug may not benefit from or be eligible for this trial.

Why it matters

Potential benefit: If successful, the trial could identify a safer and more effective oral treatment for women with moderate-to-severe acne and help reduce unnecessary long-term antibiotic use.

How similar studies have performed: Both antibiotics and spironolactone have been used successfully in prior studies and clinical practice, but direct randomized, head-to-head comparisons are limited.

Where this research is happening

PHILADELPHIA, UNITED STATES

Researchers

About this research

  1. This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
  2. Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
  3. For full project details, budget, and progress reports, visit the official NIH RePORTER page below.

View on NIH RePORTER →

Last reviewed 2026-05-15 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.