This information is for research and educational purposes only. No medical recommendations. Products are not approved for human use. For health questions, consult a doctor.

Lexicon

Muscle & performance

Halotestin (Fluoxymesterone)

The strength and aggression steroid - extreme power without mass, very hard on the liver.

1 min read 2 sources Titration Updated June 2026
Class
Oral anabolic (17a-alkylated, strongly androgenic)
Use
Oral, 1-2x per day
Half-life
about 9 hours
WADA
banned (anabolic)

Getting started

Typical dosing (research context)

Per-day figures in mg, oral. 17a-alkylated - strongly liver-loading. Usually only briefly before a competition.

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What is Halotestin?

Halotestin (Fluoxymesterone) is an oral, 17a-alkylated, strongly androgenic steroid. It builds barely any mass but delivers extreme strength, aggression and a "hard" feeling - hence its use mainly by strength and combat athletes shortly before a competition. It is very liver-loading.

This information is for research and educational purposes only. No medical advice.

How it works

Fluoxymesterone has a very high androgenic and a low anabolic mass-building profile. It aggressively raises strength and the central "drive" feeling without notable mass building. It does not aromatize.

Use and dosing

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What the research shows

Fluoxymesterone has historical clinical use (hypogonadism, anemia). The AAS pharmacology (Kicman 2008, Hartgens & Kuipers 2004) describes the strongly androgenic profile.

Side effects

  • Liver: 17a-alkylated, strong - keep short, liver support.
  • Lipids: very unfavorable, marked HDL lowering.
  • Aggression: pronounced - can be psychologically taxing.
  • Androgenic - hair loss in predisposed individuals, acne.
  • HPTA suppression - PCT topic.

Storage

Store dry and cool, protected from light. Out of reach of children.

Evidence

Sources

  1. 1 Pharmacology of anabolic steroids - comprehensive review. Kicman, Br J Pharmacol, 2008
  2. 2 Effects of androgenic-anabolic steroids in athletes. Hartgens & Kuipers, Sports Med, 2004

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Halotestin (Fluoxymesterone) in the catalog

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