Drug half life calculator

AndyP

New Member
Apologies if this is posted in the wrong place but this relates directly to a lot of conversations in this section

Gents,
I have found a really useful tool online that allows you to graph drug half lives over time to see the cumulative effects. I have seen a lot of threads that speak to half lives, either regarding test injection frequency or the build up of AIs. This helps you see exactly what your protocol or a protocol that you are thinking of applying will do for you. Simply enter the injection amount, half life in hours and injection frequency in hours. Hope this helps some of you.

Drug Half-Life Calculator
 
nice site.

half life values, depending on your ester:
  • Testosterone Propionate: 0.8 days
  • Testosterone Phenylpropionate: 1.5 days
  • Testosterone Isocaproate: 4.0 days
  • Testosterone Enanthate: 4.5 days
  • Testosterone Cypionate: 5.0 days
  • Testosterone Decanoate: 7.5 days
  • Testosterone Undecanoate: 20.9 days
 

hCG Mixing Calculator

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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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