Does Modafinil Work For Energy?

i took a small 50 mg dose my first time and I felt great that first day. Tried it again a few times and felt worse than i normally do which was strange.
 
i took a small 50 mg dose my first time and I felt great that first day. Tried it again a few times and felt worse than i normally do which was strange.

I've experienced that and have not been able to figure it out. I get the best and most consistent results when I take it on an empty stomach first thing in the morning with coffee, and don't eat anything (food, supplements, etc) for at least 1/2 an hour. And to minimize any tolerance issues, I take it only when my workload is high, and never on days off (I have a desk job which is high-stress at times). I don't need it for the gym - only for work when I need to concentrate.
 

hCG Mixing Calculator

HCG Mixing Protocol Calculator

TRT Hormone Predictor Widget

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.

ℹ️ Input Parameters

Normal range: 300-1000 ng/dL

Predicted Hormone Levels

Enter your total testosterone value to see predictions

Results will appear here after calculation

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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