Half-life of Anastrozole?

Yep about 50 hours give or take. It's why it's best to take AI's 24 hours after a test cyp injection as they both peak at about the same time.
 
Thanks guys. That's what I was looking for...

Related - does anyone have any charts that show test or AI peaking and then dropping. I think it'd be cool to see visually but haven't been able to find anything.
 
Yep about 50 hours give or take. It's why it's best to take AI's 24 hours after a test cyp injection as they both peak at about the same time.

I have been taking mine with my shot.... Knowing this should help... MY E2 was over 60 on my most recent lab work...
 
Test Cyp peaks in serum at about 72 hours after the injection and an AI has a ~50 half life so in theory both peak at about the same time which would be optimal for staving off aroamatase synthesis.
 
Test Cyp peaks in serum at about 72 hours after the injection and an AI has a ~50 half life so in theory both peak at about the same time which would be optimal for staving off aroamatase synthesis.

Cyp in a lab has a half-life of 72hours, but SHBG of the individual changes everything.
 

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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.

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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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