Halotestin (Fluoxymesterone): A Tracking Guide for a Potent Oral Androgen

Halotestin is a brand name for fluoxymesterone, an oral 17-alpha-alkylated androgen. It is an old prescription drug that has been used medically in limited settings, and non-medically it is known for sharp gains in strength and aggression without much added mass. It is also very hepatotoxic and hard on lipids.

This is an educational tracking guide, not medical advice and not a recommendation. Fluoxymesterone is a prescription and controlled substance and is not approved for the performance uses discussed here. If you have already decided to use it, the aim is honest tracking and harm reduction.

What it is

• A 17-alpha-alkylated oral steroid derived from testosterone
• Highly androgenic relative to its anabolic effect
• Non-aromatizing, so gains are "dry" rather than water-heavy

What it does

• Increases strength and perceived aggression, often used right before a strength or fighting event or a bodybuilding peak week
• Adds little muscle mass for the liver cost involved
• Suppresses natural testosterone and worsens the lipid profile quickly

Typical protocol shape

• Described, not prescribed: users commonly report very short, event-focused use because of toxicity
• Used on top of a testosterone base, with PCT afterward
• Specific doses are intentionally omitted here

What to track daily

• Blood pressure
• Mood, irritability, and aggression, which can escalate
• Sleep quality
• Any signs of liver stress such as dark urine or lasting fatigue

What to track weekly

• Strength numbers, the main reason people use it
• Bodyweight and waist
• Subjective well-being

Bloodwork worth doing

• Liver enzymes (ALT, AST) before and after - critical for this compound
• Full lipid panel, expecting a steep HDL drop
• Haematocrit and haemoglobin
• Total and free testosterone for suppression and recovery

Realistic expectations

• The main return is strength and aggression, not size
• The liver and lipid cost is high for what is gained
• The aggression can affect judgment and relationships, not just training

Common mistakes

• Treating aggression as a pure benefit and ignoring its downside
• Extending use beyond a brief event window
• Combining with other orals or alcohol
• Skipping the before-and-after liver and lipid panels

Safety notes

Fluoxymesterone is very hepatotoxic and harsh on lipids, and its strong androgenic effect can drive real mood and aggression changes. It is prescription-only and controlled for good reasons. Anyone using it should keep exposure very short, avoid other liver-stressing substances, and confirm liver enzymes and lipids with bloodwork, ideally with medical oversight.

Peptid AI is an educational and self-tracking tool. Nothing in this post is medical advice. Doses mentioned reflect what is commonly reported in research literature — they are not recommendations. Always consult a qualified physician before starting, changing, or stopping any protocol.