testosterone and erectile function

  1. M

    Libido/erectile function only in late evening

    If I take my testosterone at 6 a.m., I don't feel it until 10 p.m. Not a now and then thing; it's consistent. Rare nocturnal erections and no morning wood. I've tried different injection times, such as noon, 3 p.m., 6 p.m., 8 p.m. I suspect this is tied into bipolar illness and misaligned...
  2. D

    Erectile Function After Starting TRT

    Hi everyone, I am about 3 months into TRT and am finally seeing some benefits. The improvements are very very subtle but noticeable, I feel overall a little better. Pre trt I felt like I was dying, the weight feels like its lifting but its happening very slowly. Do the benefits continue or can I...
  3. madman

    TESTOSTERONE POSITIVELY REGULATES FUNCTIONAL RESPONSES AND NITRIC OXIDE EXPRESSION IN THE ISOLATED HUMAN CORPUS CAVERNOSUM

    ABSTRACT Background: Testosterone (T) deficiency is associated with erectile dysfunction (ED). The relaxant response of T on the corporal smooth muscle through a non-genomic pathway has been reported; however, the in vitro modulating effects of T on human corpus cavernosum (HCC) has not been...
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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