erectile dysfunction; viagra; pde5i

A 25-YEAR CELEBRATION OF THE LITTLE BLUE PILL THAT REVOLUTIONIZED AN INDUSTRY

https://www.nytimes.com/1998/05/06/nyregion/vortex-viagra-madness-long-days-for-urologist-men-clamor-for-prescriptions.html *In the early days, up to 10,000 prescriptions daily were written. Urologists were using rubber stamps to churn out prescriptions INTRODUCTION AND OBJECTIVE The...
- madman
- Thread
- May 7, 2024
- erectile dysfunction; viagra; pde5i
- Replies: 3
- Forum: When TRT Is Not Enough (ED, Libido, & More)
Sildenafil, 25 Years Later

Sildenafil: 25 Years Later – Summary Twenty-five years ago, the FDA’s approval of sildenafil (Viagra) radically reshaped the treatment of erectile dysfunction. Editor-in-Chief of Grand Rounds in Urology, E. David Crawford, MD, sits down to discuss the history and future of PDE5 inhibitors with...
- madman
- Thread
- May 26, 2023
- erectile dysfunction; viagra; pde5i
- Replies: 6
- Forum: When TRT Is Not Enough (ED, Libido, & More)

TRT Hormone Predictor Widget

Understanding Your Hormones

Estradiol (E2)

A form of estrogen produced from testosterone. Important for bone health, mood, and libido. Too high can cause side effects; too low can affect well-being.

DHT

Dihydrotestosterone is a potent androgen derived from testosterone. Affects hair growth, prostate health, and masculinization effects.

Free Testosterone

The biologically active form of testosterone not bound to proteins. Directly available for cellular uptake and biological effects.

Scientific Reference

Lakshman KM, Kaplan B, Travison TG, Basaria S, Knapp PE, Singh AB, LaValley MP, Mazer NA, Bhasin S. The effects of injected testosterone dose and age on the conversion of testosterone to estradiol and dihydrotestosterone in young and older men. J Clin Endocrinol Metab. 2010 Aug;95(8):3955-64.

DOI: 10.1210/jc.2010-0102 | PMID: 20534765 | PMCID: PMC2913038