RAD-140

Also known as: Testolone

High-anabolic SARM

What is RAD-140?

RAD-140, also known as Testolone, is a high-anabolic Selective Androgen Receptor Modulator (SARM). It belongs to the category of anabolic and myostatin peptides, designed to selectively target androgen receptors in muscle and bone tissues. RAD-140 has garnered attention for its potential to enhance muscle growth and improve physical performance without the side effects commonly associated with traditional anabolic steroids.

How It Works

RAD-140 operates by selectively binding to androgen receptors, primarily in muscle and bone tissues. This selective action promotes anabolic activity, leading to increased protein synthesis and muscle mass. Unlike anabolic steroids, which can affect multiple tissues and lead to unwanted side effects, RAD-140 aims to provide the benefits of muscle growth while minimizing adverse reactions.

Mechanism of Action

The mechanism of action involves the activation of androgen receptors, which triggers a cascade of biological processes that enhance muscle hypertrophy and strength. This selectivity allows RAD-140 to potentially provide the benefits of testosterone without the same level of risk associated with hormone replacement therapies.

Research Uses

  • Muscle Hypertrophy: Investigated for its ability to promote muscle growth in various animal studies.
  • Bone Density Improvement: Explored for potential benefits in enhancing bone density and strength.
  • Fat Loss: Studied for its effects on body composition, particularly in reducing fat mass while preserving lean muscle.
  • Physical Performance: Evaluated for its impact on endurance and overall athletic performance in preclinical models.

Effects

  • Increased Muscle Mass: Users and studies report significant gains in lean muscle tissue.
  • Enhanced Strength: Observations indicate improvements in strength levels during resistance training.
  • Improved Recovery: Some research suggests faster recovery times post-exercise.
  • Fat Loss: Reports indicate a reduction in body fat percentage while maintaining muscle mass.

Summary

RAD-140 is a high-anabolic SARM that selectively targets androgen receptors to promote muscle growth and enhance physical performance. Its unique mechanism of action and potential benefits make it a subject of interest in research related to anabolic and myostatin peptides.

Last updated: Feb 25, 2026