Do not install


Production chains for four injectable testosterone esters (propionate, enanthate, cypionate and undecanoate): androstenedione reduced to testosterone, esterified, recrystallized and compounded into oil-based vials. Doses build up simulated blood testosterone that boosts your mining and crafting speed; overshooting the target range aromatizes to estradiol, which costs crafting speed.

Content
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2.1
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Changelog

Version: 0.1.0
Date: 2026-11-11
  Major Features:
    - First release. Four injectable testosterone esters, each three steps
      from testosterone: esterification with a Pharmaceuticals acyl
      chloride, recrystallization, and compounding into MCT or castor oil
      vials. Testosterone is made from Biochemistry's androstenedione.
    - Doses build up simulated blood testosterone, shown on Biochemistry's
      hormone graph with your estradiol. Testosterone boosts mining speed,
      and crafting speed at half strength.
    - Overshooting aromatizes: injected testosterone above the target range
      (500-900 ng/dL) raises estradiol, which costs crafting speed. The
      graph's tooltip shows how much.
    - On the transmasculine route the buff grows the longer you transition,
      up to +50%, and testosterone overtaking estradiol (the crossover) is
      your milestone, with an achievement.
    - Androgen Science packs, made from vials, for every ester research
      after the first.
    - Androgen Optimization (infinite): mining speed while dosed, slower
      clearance of later doses, and an inventory slot every three levels
      (up to ten).
    - With Estrogen Mod installed too, testosterone can be aromatized into
      estradiol as an alternative recipe.
  Info:
    - The pharmacokinetic parameters are calibrated to each ester's
      published half-life and time to peak, with the reference regimens
      in the target range. They are placeholders until fitted to digitized
      serum curves.