Fluoxymesterone
Halotestin · Halo
Half-life
9 hr
Time to Peak
2 hr
Steady State
~2 days
Dose Range
10–40 mg
Frequency
Daily
Overview
Extremely potent oral AAS. FDA-approved for testosterone deficiency and delayed puberty in males, and historically for breast cancer in females (this indication largely discontinued). Known for dramatic strength increases with minimal weight gain. Very androgenic. 17-alpha-alkylated. Harm reduction: One of the most hepatotoxic oral AAS. Very harsh on liver — monitor liver enzymes frequently. Strongly impacts lipid profiles. Known for aggression — mental health monitoring is advisable. Short cycles only (2-4 weeks max). Do not combine with other hepatotoxic compounds or alcohol.
Mechanism of Action
9-alpha-fluoro-11-beta-hydroxy derivative of methyltestosterone. 17-alpha-alkylated. Extremely high androgenic activity with moderate anabolic activity. Does not aromatize.
Dosing Information
| Route | Dose Range | Half-life | Tmax | Frequency |
|---|---|---|---|---|
| Oral | 10–40 mg | 9 hr | 2 hr | Daily, 2x daily |
Storage & Handling
Room temperature — Oral tablets. Store at 20-25C. Protect from light.
Used in Regimens
Fluoxymesterone is not currently part of any catalog regimen.
Data Sources
- FDA Label Halotestin (fluoxymesterone) FDA Prescribing Information
Related Tools
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