AnaProtoKolAnaProtoKol
FeaturesCompoundsGuidesPricingLog in
5-day free trial →
HomeCompoundsMesterolone

Mesterolone (Mesterolone)

Oral steroid

Mesterolone

Proviron is a unique oral androgen: low hepatotoxicity (not C-17 alkylated), mild anti-estrogen properties, improves libido and hardness. Very popular in cutting and end-of-cycle. Binds to SHBG, freeing up more free testosterone.

Half-life

12 heures

Detection

5–6 semaines

Anabolic ratio

40

Androgenic ratio

150

Oral

Dosages

Beginner25–50 mg/j
Intermediate50 mg/j
Advanced100 mg/j
FemaleNot recommended (virilization)

Frequency : 1-2× / day

Effects

  • Increased libido
  • Hardness
  • Mild anti-estrogen properties
  • SHBG binding (frees testosterone)

Side effects

  • Hair loss (DHT)
  • Acne
  • Mild aggression
  • Mild HPTA shutdown

Support supplements

Finasteride (if alopecia)Omega-3

Synergies & stacks

Any cycleAnavarWinstrolCutting in general

Avoid

  • Users prone to alopecia

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. World Health Organization Task Force (1989). Mesterolone and idiopathic male infertility: a double-blind study. International Journal of Andrology. doi: 10.1111/j.1365-2605.1989.tb01312.x

    RCT multicentrique de l'OMS (248 couples, 157 sélectionnés sur infertilité testiculaire primaire) : mestérolone 75 mg/j × 6 mois vs placebo — pas d'amélioration significative de la fertilité dans cette indication, mais profil de tolérance favorable confirmant la sécurité clinique des doses standard.

  2. Saartok T, Dahlberg E, Gustafsson JA (1984). Relative binding affinity of anabolic-androgenic steroids: comparison of the binding to the androgen receptors in skeletal muscle and in prostate, as well as to sex hormone-binding globulin. Endocrinology. doi: 10.1210/endo-114-6-2100

    Étude de référence : mestérolone (Proviron) se lie fortement à la SHBG et déplace la testostérone vers la forme libre — affinité musculaire faible (ratio 40/150) mais effet pharmacologique central via augmentation de la testostérone biodisponible.

  3. Kicman AT (2008). Pharmacology of anabolic steroids. British Journal of Pharmacology. doi: 10.1038/bjp.2008.165

    Revue de pharmacologie : mestérolone est un dérivé DHT 1-méthyl non-alkylé 17α (pas d'hépatotoxicité de premier passage), non aromatisable, demi-vie orale ~12 h — partiellement inhibiteur de l'aromatase et antagoniste œstrogénique tissulaire.

  4. 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 : la mestérolone (Proviron) figure parmi les composés à profil de tolérance le plus favorable parmi les oraux, sans hépatotoxicité significative, sans aromatisation, mais avec activité androgénique cutanée et capillaire à surveiller chez prédisposés.

Personalized tracking, dose-response curves and AI advice

Track your cycles with personalized curves based on your weight and profile, tailored AI advice, a daily journal and 59 blood markers.

Free 5-day trial — no credit card

Compounds

  • Compound database
  • Dianabol
  • Testosterone Enanthate
  • Trenbolone
  • Anavar
  • Winstrol
  • Clenbuterol

Calculators

  • All calculators
  • FFMI calculator
  • TDEE calculator
  • Wilks calculator
  • Half-life calculator

Guides

  • All guides
  • First steroid cycle
  • Designing a cycle
  • PCT protocol
  • Blood work on cycle
  • Side effects

AnaProtoKol

  • Features
  • Pricing
  • FAQ
  • Affiliate program
AnaProtoKolAnaProtoKol
Log inAffiliate programTermsPrivacyCookies© 2026 AnaProtoKol

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.