Proviron (Mesterolone)
1α-methyl-17β-hydroxy-5α-androstan-3-one. Anabolic Androgenic Steroid (AAS), oral dht derivative.
This page describes what Proviron (Mesterolone) 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
- 12 hours
- Liver strain
- Low (not 17α-alkylated)
- Kidney strain
- Low
- Converts to estrogen
- None (anti-estrogenic)
- Suppresses natural hormones
- Not typically
Medical uses
- Male hypogonadism
- Male infertility
- Androgen deficiency
What it does in the body
Androgenic
- Reduces SHBG (increases free testosterone)
- Increases libido
- Improves mood
- Mild anti-estrogenic effects
- Muscle hardness
Forms, half-life and detection
| Form | Half-life | Reported detection window |
|---|---|---|
| Oral | 12 hours | 5-6 weeks |
Side effects and health risks
Androgenic
- Acne
- Hair loss (DHT derivative)
- Prostate enlargement
Heart and blood vessels
- Negative lipid changes (mild)
Hormones and fertility
- Mild testosterone suppression
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
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 Proviron (Mesterolone)?
About 12 hours. Half-life is the time for the level in the blood to fall by half.
How long is Proviron (Mesterolone) detectable?
Testing windows of 5-6 weeks are reported, depending on the test and the person.
Is Proviron (Mesterolone) 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 Proviron (Mesterolone)?
Based on its properties, these markers are commonly monitored: HDL Cholesterol, LDL Cholesterol, Hematocrit and Hemoglobin. A doctor can order and interpret them.
What are the side effects of Proviron (Mesterolone)?
Androgenic: acne, hair loss (dht derivative) and prostate enlargement. Heart and blood vessels: negative lipid changes (mild). Hormones and fertility: mild testosterone suppression.
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.