---
title: "Fluoxymesterone"
description: "⚠️ Reserved for very experienced athletes seeking maximum pre-competition aggression. Very high anabolic/androgenic ratio but extreme hepatotoxic and psychological effects. Last-resort use, 2-4 weeks maximum."
lang: en
dateModified: 2026-05-25
canonical: https://anaprotokol.com/en/molecule/halotestin
---

# Fluoxymesterone

⚠️ Reserved for very experienced athletes seeking maximum pre-competition aggression. Very high anabolic/androgenic ratio but extreme hepatotoxic and psychological effects. Last-resort use, 2-4 weeks maximum.

**Catégorie** : Stéroïde oral
**Voie d'administration** : Oral
**Demi-vie** : 6–8 heures
**Détection** : 2 mois
**Ratio anabolique** : 1900
**Ratio androgénique** : 1600
**Aromatisation** : Non
**Progestine** : Non
**Hépatotoxique** : Oui
**PCT requise** : Oui

**Autres noms** : Halo, Fluoxymesterone

## Effets
- Extreme aggression and training rage
- Maximum explosive strength
- Hardness
- No significant mass gain

## Effets secondaires
- Extreme hepatotoxicity
- Pathological aggression
- Severe acne
- Hypertension
- LDL↑↑↑
- Total HPTA shutdown

## Suppléments de soutien
- TUDCA +++
- NAC
- Omega-3
- Antihypertensive if needed

## Synergies
- Test (base)
- Pre-contest only (last 2-3 weeks)

## À éviter
- Cycle > 4 weeks
- Cardiovascular issues
- Beginners
- Stacking with other orals

## Dosage masculin
- Débutant : Non recommandé débutants
- Intermédiaire : 10–20 mg/j (max 4 sem)
- Avancé : 20–40 mg/j (pré-compétition uniquement)

## Dosage féminin
Contraindicated

**Fréquence** : 2-3× / day