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[USER=38859]@Rain27[/USER] , Testoviron 250mg and Nebido are intended to be administered with a single shot, therefore the manufacturer doesn't add Benzyl Alcohol which is needed to prevent bacteria growth in a situation where you make multiple shots from the same batch over a period of time. BA is added to multi-dose Testoviron vials sold in the US.

I use Testoviron 250mg for five bi-weekly shots. I measure 0.01ml Benzyl alcohol (close enough to 0.9%) via an insulin syringe (using the 1IU mark) and add it to the Testoviron. I buy the BA for 6$ here:

Benzyl Alcohol USP, NF, Non-GMO, GRAS Certified, 50mL / 1.7 fl oz | Med Lab Supply

[QUOTE="Simon7, post: 157309, member: 14795"] [USER=38859]@Rain27[/USER] , Testoviron 250mg and Nebido are intended to be administered with a single shot, therefore the manufacturer doesn't add Benzyl Alcohol which is needed to prevent bacteria growth in a situation where you make multiple shots from the same batch over a period of time. BA is added to multi-dose Testoviron vials sold in the US. I use Testoviron 250mg for five bi-weekly shots. I measure 0.01ml Benzyl alcohol (close enough to 0.9%) via an insulin syringe (using the 1IU mark) and add it to the Testoviron. I buy the BA for 6$ here: [URL='https://www.medical-and-lab-supplies.com/benzyl-alcohol-usp-50ml-1-7oz.html']Benzyl Alcohol USP, NF, Non-GMO, GRAS Certified, 50mL / 1.7 fl oz | Med Lab Supply[/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