S-23
(2S)-3-(4-cyanophenoxy)-N-[4-cyano-3-(trifluoromethyl)phenyl]-2-hydroxy-2-methylpropanamide. Selective Androgen Receptor Modulator (SARM), non-steroidal sarm.
This page describes what S-23 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
- Selective Androgen Receptor Modulator (SARM)
- Legal status
- Research chemical (not approved for human use)
- Half-life
- 12 hours
- Liver strain
- Moderate
- Kidney strain
- Low-Moderate
- Converts to estrogen
- None
- Suppresses natural hormones
- Yes
Medical uses
- None (research for male contraception)
What it does in the body
Anabolic
- Muscle hardness and density
- Strength increase
- Fat loss
- Increased vascularity
- No water retention
Forms, half-life and detection
| Form | Half-life | Reported detection window |
|---|---|---|
| Oral (liquid or capsules) | 12 hours | Unknown |
Side effects and health risks
Hormones and fertility
- Severe testosterone suppression (comparable to steroids)
- Testicular atrophy
- Reduced sperm count
Liver
- Elevated liver enzymes
Mood and mind
- Increased aggression
- Mood swings
Other
- Darkened urine
- Night sweats
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: Moderate: ALT (SGPT), AST (SGOT), GGT, Bilirubin
- Shuts down natural production (PCT needed): Total Testosterone, LH, FSH
Related compounds
Questions
What is the half-life of S-23?
About 12 hours. Half-life is the time for the level in the blood to fall by half.
How long is S-23 detectable?
Testing windows of Unknown are reported, depending on the test and the person.
Is S-23 legal?
Research chemical (not approved for human use). Laws differ by country and change; check the rules where you live.
What blood tests matter with S-23?
Based on its properties, these markers are commonly monitored: HDL Cholesterol, LDL Cholesterol, Hematocrit, Hemoglobin, ALT (SGPT), AST (SGOT), GGT, Bilirubin, Total Testosterone, LH and FSH. A doctor can order and interpret them.
What are the side effects of S-23?
Hormones and fertility: severe testosterone suppression (comparable to steroids), testicular atrophy and reduced sperm count. Liver: elevated liver enzymes. Mood and mind: increased aggression and mood swings.
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.