RAD-140 (Testolone) SARM Guide

RAD-140, also known as Testolone, is one of the most popular and potent investigational SARMs (Selective Androgen Receptor Modulators). SARMs are designed to have similar effects to anabolic steroids but with greater tissue selectivity, meaning they are intended to bind to androgen receptors primarily in muscle and bone tissue, with less effect on other organs like the prostate. RAD-140 is known for its powerful anabolic effects, producing significant gains in lean muscle mass and strength. Anecdotally, its effects are often compared to a low dose of testosterone. From a biological age perspective, its ability to combat sarcopenia is its main appeal. However, like all SARMs, its long-term safety profile in humans is unknown. Studies have shown that it is also highly suppressive to natural testosterone production, requiring a proper Post-Cycle Therapy (PCT) protocol. Its status as a research chemical means its use carries significant unknown risks.