When I use cream on the scrotum (for DHT) in addiiotn to my injection, the effect is only 24hrs. I can apply it 12.5 - 25mg in the morning and see my DHT over the lab range within ~3hrs. At 24hrs I return to baseline. Testing verified.
The application to the scrotum as the sole delivery method is kind of new territory that I don't we have answers for. You'll have to get on it and test and see how things go. Lacking the ester of an injection makes it the unknown I think.
So if one application lasts 24 hours for you, pretty much means by the next day it's all gone. For someone who is using just the cream, their baseline is 0. So I'll probably feel like hell when I wake up. I wonder if I should add a very small injectable T dose twice a week to set a baseline higher than 0
Hello,
1- What is the half time for T Cream? If I use 200mg in the morning, will the T last til end of the day (12 hours is enough) ? I'd rather rub on once than twice a day. I will be doing the Scrotum application soon.
2- How many days til it stabilizes?
Hello,
1- What is the half time for T Cream? If I use 200mg in the morning, will the T last til end of the day (12 hours is enough) ? I'd rather rub on once than twice a day. I will be doing the Scrotum application soon.
2- How many days til it stabilizes?
Steady state should be achieved 48-72 hrs.
Pharmacokinetics of testosterone cream applied to scrotal skin
*R. Iyer, *S. F. Mok, S. Savkovic, L. Turner, G. Fraser, R. Desai, V. Jayadev, A. J. Conway and D. J. Handelsman
DISCUSSION
This study provides a pharmacokinetic profile of three doses of testosterone administered to the scrotal skin in a cream formulation. Application of the testosterone cream produced a rapid rise in serum testosterone peaking around 2 h after administration with a dose-dependent peak concentration, but not any consistent relationship between time of peak and testosterone dose. At the lowest dose (12.5 mg), the serum testosterone concentrations were maintained in physiological range for at least 12 h and with the 25 mg dose maintained serum testosterone concentrations within the physiological range for nearly 24 h concentration.
Predict estradiol, DHT, and free testosterone levels based on total testosterone
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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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.
Dihydrotestosterone is a potent androgen derived from testosterone. Affects hair growth, prostate health, and masculinization effects.
The biologically active form of testosterone not bound to proteins. Directly available for cellular uptake and biological effects.
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