Methyltrienolone (Oral Tren / Metribolone)
17α-methyl-estra-4,9,11-trien-17β-ol-3-one. Anabolic Androgenic Steroid (AAS), oral 17α-alkylated 19-nor steroid.
This page describes what Methyltrienolone (Oral Tren / Metribolone) is and its known risks. It is not medical advice and not a guide to using it. Many of these substances are prescription-only or illegal to use without a prescription. Speak to a doctor.
- Class
- Anabolic Androgenic Steroid (AAS)
- Legal status
- Schedule 4 (South Africa) / Schedule III (USA)
- Half-life
- 6-8 hours
- Liver strain
- Extreme
- Kidney strain
- Moderate-High
- Converts to estrogen
- None (progestin activity)
- Suppresses natural hormones
- Yes
Medical uses
- None (historically a research/diagnostic reagent, never marketed for treatment)
What it does in the body
Anabolic
- Extreme strength increase
- Muscle hardness
- No water retention
Androgenic
- Extremely high androgenic activity
- Extreme aggression
Forms, half-life and detection
| Form | Half-life | Reported detection window |
|---|---|---|
| Oral | 6-8 hours | Unknown |
Side effects and health risks
Liver
- Extremely hepatotoxic (among the most liver-toxic oral compounds known)
- Rapid, severe liver enzyme elevation
Heart and blood vessels
- Severe lipid changes
- Significant blood pressure increase
Hormones and fertility
- Extreme testosterone suppression
- Prolactin increase
Mood and mind
- Extreme aggression
- Severe insomnia
- Anxiety
Blood tests worth monitoring
From its known properties, these are the markers doctors commonly check. Getting blood work before, during and after is how problems are caught early.
- Androgens tend to lower HDL, raise LDL and thicken the blood: HDL Cholesterol, LDL Cholesterol, Hematocrit, Hemoglobin
- Liver strain: Extreme: ALT (SGPT), AST (SGOT), GGT, Bilirubin
- Kidney strain: Moderate-High: Creatinine, BUN, eGFR
- Shuts down natural production (PCT needed): Total Testosterone, LH, FSH
Related compounds
- Testosterone Cypionate
- Testosterone Enanthate
- Testosterone Propionate
- Deca-Durabolin (Nandrolone Decanoate)
- NPP (Nandrolone Phenylpropionate)
- Trenbolone Acetate
- Trenbolone Enanthate
- Equipoise (Boldenone Undecylenate)
Questions
What is the half-life of Methyltrienolone (Oral Tren / Metribolone)?
About 6-8 hours. Half-life is the time for the level in the blood to fall by half.
How long is Methyltrienolone (Oral Tren / Metribolone) detectable?
Testing windows of Unknown are reported, depending on the test and the person.
Is Methyltrienolone (Oral Tren / Metribolone) legal?
Schedule 4 (South Africa) / Schedule III (USA). Laws differ by country and change; check the rules where you live.
What blood tests matter with Methyltrienolone (Oral Tren / Metribolone)?
Based on its properties, these markers are commonly monitored: HDL Cholesterol, LDL Cholesterol, Hematocrit, Hemoglobin, ALT (SGPT), AST (SGOT), GGT, Bilirubin, Creatinine, BUN, eGFR, Total Testosterone, LH and FSH. A doctor can order and interpret them.
What are the side effects of Methyltrienolone (Oral Tren / Metribolone)?
Liver: extremely hepatotoxic (among the most liver-toxic oral compounds known) and rapid, severe liver enzyme elevation. Heart and blood vessels: severe lipid changes and significant blood pressure increase. Hormones and fertility: extreme testosterone suppression and prolactin increase.
For information only, not medical advice. MyoStats is a tracking tool used at your own discretion. Speak to a doctor before changing your training, diet, medication or anything you take.