Help with arimidex dosing

GerryGerrison

New Member
Protocol
56mg test cyp e3.5 days
hcg 250iu e3.5days


total test 934 (200-1100)
Free test 179 (35-155)
Sensitive e2 60 (8-35)


After latest e2 reading my doc has prescribed me arimidex .5 mg e3.5 days with my injections. Is that a sensible starting dose or should i go with .25mg? I had low e2 before TRT and that was hell. If .5mg ends up being too much how long would it take for e2 to recover?
 
Sensitive E2 is obviously a little high. Don't know if you strictly look at the range or use Nelson's T/E ratio. How are you feeling with E2 in that range? I'm a big believer in starting with a low dose, because it's a pretty powerful drug. Wouldn't hurt to try the lower dose of .25 mg twice weekly.
 
I'm feeling like I have high e2. lol

-bloated
-weepy at times
-a bit moody
-libido almost back to before trt

Yea I guess there is no reason not to start with .25 instead of .5. Do I just take it at the same time as my injection?
 
There's debate as to the ideal timing. Guys consider the half life of both drugs and correctly timing your dose based on when the exogenous test peaks. For me, I feel the AI very quickly, others not as quick. One of the docs once said 24 hours after injection is probably best, but it's not really noticeably different (for most guys) than taking it with your injection. I've got a busy life, so it comes down to convenience for me more than anything. I take my AI with my injection.
 
Anastrozole works right away and has a half-life of about 50hrs. I concur, .5mg is too much, Estrogen is something that can be very easily swung the wrong way, too low, so it's important to creep down on your E and not attack it. .25mg E3.5d should work, I don't think timing has any appreciable effect on things.
 
responses to AIs vary. I know a guy running a cycle of 500mgs Test and does 1mg of AI 3x per week and his E2 is 30. So he says. If you response is proportionate to his, then you would only need 0.5mg for the week. BUT everyone differs. Nonetheless, Id go with 0.25mg take labs in a few weeks. Adjust if necessary
 
Looks like im gonna go with the .25 e3.5 days and retake labs in a few weeks. Thanks for the input and assistance.

A good rule to follow is to let a minimum of four weeks pass once any protocol change has been made before you test again. Patience is a virtue in the TRT world. Keep us posted, please!
 

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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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