The most comprehensive, visually engaging guide to testosterone optimization—backed by 30+ years of clinical experience and insights from 42,000+ community members.
What's Inside
More than a book—a comprehensive toolkit combining cutting-edge science, real-world experience, and community wisdom.
Comprehensive coverage of TRT diagnosis, treatment options, dosing protocols, and side-effect management backed by clinical research.
427 pages of vibrant visuals, diagrams, and infographics that make complex medical concepts accessible and memorable.
Scan codes throughout the book to access updated online content, videos, and articles—keeping your knowledge current.
Distilled wisdom from 13+ years moderating ExcelMale.com—real experiences from thousands of men on their TRT journey.
Written for both men seeking to optimize their health and healthcare professionals looking to enhance their TRT protocols.
Treatment options available worldwide, including specialized sections in Spanish and expert interviews from international practitioners.
About the Author
Chemical Engineer, MBA • Hormone Health Advocate • Bestselling Author
Nelson Vergel's journey into hormone optimization began over 30 years ago following an HIV diagnosis. Rather than accepting a grim prognosis, he dedicated himself to exploring cutting-edge therapies—ultimately saving his own life and countless others. His research has made him one of the world's foremost authorities on testosterone replacement therapy and men's health.
Reader Reviews
I have been following Nelson Vergel's work for more than 20 years, beginning with the lifesaving book, Built to Survive. Beyond Testosterone is easy to consume and understand for all types of people—from patients to healthcare professionals. Consider this a direct line to the top minds in Men's Health medicine.
Verified Buyer
20+ Year Follower
The layout is super user-friendly, with QR codes that link to updated info, making it more than just a book—it's a living resource. Nelson's experience really shines through in the way he explains complex topics without making them feel overwhelming.
Verified Buyer
Healthcare Professional
Complete Coverage
27 comprehensive chapters covering every aspect of testosterone optimization and men's health.
Whether you're a patient wanting to reclaim your vitality or a clinician seeking practical TRT protocols, this book is your indispensable guide.
Order Your Copy TodayPredict estradiol, DHT, and free testosterone levels based on total testosterone
This tool provides predictions based on statistical models and should NOT replace professional medical advice. Always consult with your healthcare provider before making any changes to your TRT protocol.
Enter your total testosterone value to see predictions
Results will appear here after calculation
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.
Dihydrotestosterone is a potent androgen derived from testosterone. Affects hair growth, prostate health, and masculinization effects.
The biologically active form of testosterone not bound to proteins. Directly available for cellular uptake and biological effects.
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