Inhibition of Steroid 5 Alpha-Reductase with Finasteride: Sleep-Related Erections, Potency, and Libido in Healthy Men June 1995 in “ The Journal of Clinical Endocrinology and Metabolism ” G. F. Cunningham We don't know much about this study yet. We're maintaining the world's largest resposity of hair loss research. You can help out the community by sending a PDF of this study here . Not sure how to get a study's PDF? You can email the authors of the study. View this study on press.endocrine.org →