kyzatrex

  1. Nelson Vergel

    The Evolution of Testosterone Products in the U.S. (1935-2025)

    Thanks to Dr Sun for this diagram. Timeline details (left → right) YearProduct (image above/below the line)Form & delivery 1935-1937No product image—text block below the line: “Testosterone first synthesized” with a bullet list of early preparations (oral 17α-methyltestosterone, injectable...
  2. D

    Anxiety from Kyzatrex?

    Its been nearly a week since I got the okay from my provider to double my Kyzatrex dose from 200mg twice a day to 400mg twice a day. Ever since, I've noticed anxiety creeping in, usually in the evenings. I take my second dose at around 2pm. Has anyone else experienced this when changing...
  3. V

    Switching from injections to Kyzatrex - residual T and labs timing?

    As the title states, I am switching from 12mg T cypionate subq daily injections to Kyzatrex oral testosterone (I plan on detailing my journey in another thread when I have labs to share). I stopped my injections today and will not start taking Kyzatrex for a week. I have some questions about how...
  4. Nelson Vergel

    Optimizing Oral Testosterone Undecanoate (Kyzatrex) TRT: All You Need to Know

    Transcript: Nelson Vergel: Hello, everybody. Nelson Vergel here with ExcelMale.com and DiscountedLabs.com. I'm very honored today to have one of the top urologists here in Texas. He's in Dallas, Dr. Andrew Sun. He's actually in Arlington, north of Dallas. Dr. Sun specializes in men's health...
  5. Nelson Vergel

    Interview with Shalin Shah, CEO of Marius Pharmaceuticals, on Kyzatrex: An Oral Testosterone Treatment

    Nelson Vergel from ExcelMale.com and DiscountedLabs.com interviews Shalin Shah, CEO of Marius Pharmaceuticals, about Kyzatrex, an oral testosterone treatment. They discuss the treatment, misconceptions, unique aspects, potential side effects, dosing, and more. History of Drug Approval...
  6. J

    Kyzatrex - sudden emptiness feeling in head

    Hi all, after beginning kyzatrex, I’ve noticed I have moments in the day where my mind gets spacey and feels empty. I don’t know how to explain it well, but has anyone had similar symptoms? I wonder if it has to do with water intake and or diet?
  7. Nelson Vergel

    FDA Approves Oral Testosterone Replacement Therapy Kyzatrex

    Another oral testosterone undecanoate. https://www.empr.com/home/news/fda-approves-oral-testosterone-replacement-therapy-kyzatrex/
TRT Hormone Predictor Widget

TRT Hormone Predictor

Predict estradiol, DHT, and free testosterone levels based on total testosterone

⚠️ Medical Disclaimer

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.

ℹ️ Input Parameters

Normal range: 300-1000 ng/dL

Predicted Hormone Levels

Enter your total testosterone value to see predictions

Results will appear here after calculation

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

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