Trenbolone Acetate
17β-Hydroxyestra-4,9,11-trien-3-one acetate. Anabolic Androgenic Steroid (AAS), 19-nor steroid.
This page describes what Trenbolone Acetate 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) - Veterinary use only
- Half-life
- 1-2 days
- Liver strain
- Low
- Kidney strain
- Moderate-High
- Converts to estrogen
- None (but strong progestin activity)
- Suppresses natural hormones
- Yes
Medical uses
- None (veterinary use only - cattle)
What it does in the body
Anabolic
- Extreme muscle hardness
- Significant strength increase
- Fat loss (nutrient partitioning)
- Increased vascularity
- No water retention
- Increased protein synthesis
- Increased IGF-1 levels
Androgenic
- Very high androgenic activity
- Increased aggression ('tren rage')
- Increased libido (initially)
Forms, half-life and detection
| Form | Half-life | Reported detection window |
|---|---|---|
| Injectable (Intramuscular) | 1-2 days | 4-5 months |
Side effects and health risks
Estrogenic
- Gynecomastia (via progestin activity, not aromatization)
- No water retention
Androgenic
- Severe acne
- Accelerated hair loss
- Oily skin
- Prostate enlargement
Heart and blood vessels
- Severe LDL increase
- Severe HDL decrease (worst of all AAS)
- Significant blood pressure increase
- Left ventricular hypertrophy
- Increased risk of cardiovascular events
Liver
- Minimal direct liver toxicity
Hormones and fertility
- Extreme testosterone suppression
- Prolactin increase
- Testicular atrophy
Mood and mind
- Severe aggression and irritability
- Anxiety
- Insomnia
- Night sweats (severe)
- Paranoia
- Depression
- Erectile dysfunction ('tren dick')
Respiratory
- Reduced cardiovascular endurance ('tren cough')
- Shortness of breath
Kidneys
- Kidney strain
- Dark urine (metabolites)
Unique
- Night sweats (very common)
- Insomnia (very common)
- Increased body temperature
- Reduced cardiovascular capacity
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
- Kidney strain: Moderate-High: Creatinine, BUN, eGFR
- Shuts down natural production (PCT needed): Total Testosterone, LH, FSH
Related compounds
- Deca-Durabolin (Nandrolone Decanoate)
- NPP (Nandrolone Phenylpropionate)
- Trenbolone Enanthate
- Parabolan (Trenbolone Hexahydrobenzylcarbonate)
Questions
What is the half-life of Trenbolone Acetate?
About 1-2 days. Half-life is the time for the level in the blood to fall by half.
How long is Trenbolone Acetate detectable?
Testing windows of 4-5 months are reported, depending on the test and the person.
Is Trenbolone Acetate legal?
Schedule 4 (South Africa) / Schedule III (USA) - Veterinary use only. Laws differ by country and change; check the rules where you live.
What blood tests matter with Trenbolone Acetate?
Based on its properties, these markers are commonly monitored: HDL Cholesterol, LDL Cholesterol, Hematocrit, Hemoglobin, Creatinine, BUN, eGFR, Total Testosterone, LH and FSH. A doctor can order and interpret them.
What are the side effects of Trenbolone Acetate?
Estrogenic: gynecomastia (via progestin activity, not aromatization) and no water retention. Androgenic: severe acne, accelerated hair loss and oily skin. Heart and blood vessels: severe ldl increase, severe hdl decrease (worst of all aas) and significant blood pressure 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.