Halotestin (Fluoxymesterone)
HAL-oh-tes-tin
Category
Compound type
Phase / Status
FDA approved but rarely prescribed. Known for extreme side effects.
Standard Dose
Daily
Half-life
Plasma elimination
Route(s)
Oral
Research Stage
Regulatory approval granted; post-market monitoring ongoing.
Overview
Halotestin is the ultimate 'fight or flight' steroid, it delivers pure, dry strength gains and almost cartoonish levels of aggression without adding a single pound of water weight. Powerlifters and combat athletes use it right before competition for that primal edge, because it hits fast and hard. The trade-offs are brutal: it's among the most liver-toxic oral steroids ever made, and the mood disruption is legendary, think snapping at your loved ones over nothing. Nobody should run this for more than 2-3 weeks, and even then only with liver support and no pre-existing anger issues. This is not a bodybuilding compound; it's a performance tool for very specific, very short windows.
Plain-language summary
Halotestin is the ultimate 'fight or flight' steroid, it delivers pure, dry strength gains and almost cartoonish levels of aggression without adding a single pound of water weight. Powerlifters and combat athletes use it right before competition for that primal edge, because it hits fast and hard. The trade-offs are brutal: it's among the most liver-toxic oral steroids ever made, and the mood disruption is legendary, think snapping at your loved ones over nothing. Nobody should run this for more than 2-3 weeks, and even then only with liver support and no pre-existing anger issues. This is not a bodybuilding compound; it's a performance tool for very specific, very short windows.
Administration Routes
- Oral
Also known as
Mechanisms
17-alpha-alkylated testosterone derivative - extreme androgen receptor binding, minimal aromatization, massive liver stress
Detailed mechanism
Fluoxymesterone is a 17-alpha-alkylated synthetic testosterone derivative with a fluorine atom at C-9, giving it extreme androgen receptor binding affinity and near-zero aromatase activity. It potently activates AR-mediated transcription in skeletal muscle and CNS pathways responsible for aggression, producing rapid strength and neurological arousal without estrogen-mediated water retention. The 17-alpha-alkylation renders it resistant to first-pass hepatic metabolism but simultaneously imposes severe hepatotoxic burden through cholestasis and direct hepatocellular stress, limiting safe exposure windows to 2-4 weeks.
Safety
Side effects
- Extreme liver toxicity
- Severe aggression and mood swings
- Cardiovascular strain
- Hair loss
- Acne
- Testicular atrophy
- Hypertension
Reported benefits
- Extreme strength gains
- No water retention
- Increased aggression
- Enhanced focus
Safety profile
Extremely hepatotoxic. High risk of psychiatric side effects. Use only under strict medical supervision.
Clinical trials
Limited clinical use due to toxicity profile.
Structure
Verified structure
Halotestin (Fluoxymesterone)
No exact public structure match was confirmed, so the app will render a formula-backed illustration.
- Chemical Formula
- C21H29FO3
- Molecular Weight
- 336.44 g/mol
- CAS Number
- 76-43-7
Stack Context
Stacks with
References
- 1View source
Effects of androgenic-anabolic steroids in athletes (Sports Med)
2004
- 2View source
A review of the chemistry, biological action, and clinical applications of anabolic-androgenic steroids (Mayo Clin Proc)
2001
- 3View source
Psychiatric and medical effects of anabolic-androgenic steroid use in bodybuilders (Arch Gen Psychiatry)
1994
This profile summarizes research literature for education only. It is not medical advice, and it does not diagnose, treat, or recommend a dose. Consult a qualified professional before changing a protocol.