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5mcg twice a day is the dose. From my understanding T3 effects last longer than 6 hrs. You divide the dose to keep from spiking it up causing side effects. Taking 10mcg at one time is not the same as dividing it. Kind of like dosing T into more smaller doses instead of one big one. Pfizer says dose once a day. http://labeling.pfizer.com/ShowLabeling.aspx?id=703

[QUOTE="captain, post: 138689, member: 14339"] 5mcg twice a day is the dose. From my understanding T3 effects last longer than 6 hrs. You divide the dose to keep from spiking it up causing side effects. Taking 10mcg at one time is not the same as dividing it. Kind of like dosing T into more smaller doses instead of one big one. Pfizer says dose once a day. [URL]http://labeling.pfizer.com/ShowLabeling.aspx?id=703[/URL] [/QUOTE]

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TRT Hormone Predictor Widget

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