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Exemestane (Aromasin)

Anti-estrogen & SERM

Aromasin

Suicide AI (irreversible), so more stable than Arimidex. Better cholesterol profile. Mild androgenic effect. Preferred for cutting or when there are cholesterol issues with Anastrozole.

Half-life

24 heures

Detection

2 semaines

Oral

Dosages

Beginner12,5 mg/EOD
Intermediate25 mg/EOD
Advanced25 mg/j
FemaleMedical use only

Frequency : EOD

Effects

  • Estrogen reduction
  • Gyno prevention
  • Slightly androgenic (an advantage)

Side effects

  • Joint pain if overdosed
  • Less HDL impact than Anastrozole

Support supplements

Omega-3

Synergies & stacks

Any aromatizing cycle

Avoid

  • Overdosing

AnaProtoKol is a health and performance tracking tool. This information is provided for educational purposes only and does not constitute medical advice. Consult a qualified healthcare professional before starting any protocol.

Sources

Studies and scientific publications this guide relies on.

  1. Mauras N, Lima J, Patel D, et al. (2003). Pharmacokinetics and dose finding of a potent aromatase inhibitor, aromasin (exemestane), in young males. Journal of Clinical Endocrinology & Metabolism. doi: 10.1210/jc.2003-030073

    Étude PK/PD pivot chez jeunes hommes : exemestane 25 mg/j (dose adulte standard) supprime l'œstradiol d'environ 50 % et élève la testostérone d'environ 60 % — pharmacocinétique d'un inhibiteur stéroïdien irréversible (« suicide inhibitor ») avec absence de rebond à l'arrêt.

  2. Coombes RC, Hall E, Gibson LJ, et al. (2004). A randomized trial of exemestane after two to three years of tamoxifen therapy in postmenopausal women with primary breast cancer. New England Journal of Medicine. doi: 10.1056/NEJMoa040331

    RCT NEJM (Intergroup Exemestane Study, IES) chez 4 742 femmes ménopausées avec cancer du sein hormono-dépendant : exemestane 25 mg/j après 2-3 ans de tamoxifène améliore la survie sans récidive (hazard ratio 0,68) — référence clinique d'usage chronique de l'exemestane.

  3. Rossi E, Morabito A, De Maio E, et al. (2009). Endocrine effects of adjuvant letrozole + triptorelin compared with tamoxifen + triptorelin in premenopausal patients with early breast cancer. Journal of Clinical Oncology. doi: 10.1200/JCO.2008.18.6379

    Étude oncologique : les inhibiteurs d'aromatase (létrozole, exemestane) suppriment fortement l'œstradiol, ce qui s'accompagne d'effets osseux délétères (perte de DMO accélérée, marqueurs de résorption ↑) et de symptômes ménopausiques — surveillance osseuse recommandée.

  4. Burnett-Bowie SA, McKay EA, Lee H, et al. (2009). Effects of aromatase inhibition on bone mineral density and bone turnover in older men with low testosterone levels. Journal of Clinical Endocrinology & Metabolism. doi: 10.1210/jc.2009-0739

    RCT 12 mois sous inhibiteur d'aromatase chez homme âgé : DMO rachidienne diminue, marqueurs de résorption ↑ — démonstration que l'os masculin dépend de l'œstradiol, transposable à tout AI puissant (anastrozole, exemestane, létrozole).

  5. Pope HG Jr, Wood RI, Rogol A, et al. (2014). Adverse health consequences of performance-enhancing drugs: an Endocrine Society scientific statement. Endocrine Reviews. doi: 10.1210/er.2013-1058

    Énoncé Endocrine Society : usage des inhibiteurs d'aromatase en gestion œstrogénique sous AAS — prévention de gynécomastie chez utilisateurs de fortes doses de testostérone, mais usage non guidé par le bilan déconseillé (risque de crash œstrogène).

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Hormonal markers on cycle

Steroid side effects guide

Gyno from steroids

Aromatase inhibitors on cycle

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AnaProtoKol is a health and performance tracking tool. This information is provided for educational purposes only and does not constitute medical advice. Consult a qualified healthcare professional before starting any protocol.