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RAD140, commonly known as Testolone, is a potent selective androgen receptor modulator (SARM) developed to mimic the effects of testosterone without the associated side effects. Designed to enhance lean muscle mass, strength, and endurance, RAD140 is one of the most powerful SARMs available for research purposes.
Unlike anabolic steroids, RAD140 is tissue-selective. Therefore, it targets muscle and bone tissue while sparing vital organs, offering a high anabolic ratio with minimal androgenic activity.
RAD140 binds selectively to androgen receptors in skeletal muscle and bone tissues, stimulating anabolic activity without converting to estrogen or affecting other organs. This precision targeting leads to accelerated muscle growth, increased stamina, and improved recovery, making it a highly popular compound in performance enhancement research.
With one of the highest anabolic-to-androgenic ratios among SARMs, RAD140 is often studied as a potential alternative to testosterone replacement therapy (TRT) without the risks of aromatisation or benign prostatic hyperplasia (prostate enlargement).