Under development by Radius Health as a solution to treat excessive muscle wasting, RAD-140 is hailed as the ultimate muscle builder in the performance enhancing world. Known as a Selective Androgen Receptor Modulator (SARM), its benefits are similar to those found in healthy males with high testosterone levels.


Product Description

Users can expect an accelerated weight increase coupled with impressive muscle gain without compromising overall health. This is possible thanks to a significant increase in energy, strength, and endurance. RAD-140 also boosts fat burning, helping you achieve chiselled muscle definition and show off your lean physique.

Key Benefits:

  • Combats severe muscle wasting
  • Accelerates weight increase
  • Supports bulking
  • No adverse effects on overall health
  • Improves energy and maximises endurance
  • Boosts fat burning potential

Product Information

Product Name: RAD-140, Testolone.

Molecular Formula: C20H16ClN5O2


What is it?

RAD-140 (Testolone) is a selective androgen receptor modulator (SARM) currently under development by Radius Health as a product for testosterone replacement therapy capabilities to aid in the treatment of muscle wasting associated with diseases such as cancer. It was first discovered in 2010.
This compound essentially behaves like a steroid without the negative side effects and in some cases actually reduces the symptoms.

Mechanism of action?

It has been shown to carry key benefits attributable to increased testosterone in healthy male subjects and in animal models has been shown to counter the prostate-enlargement caused by testosterone use. RAD140 stimulates the levator ani muscle in a mouse studies.

In studies in Macaca fascicularis a mean weight gain of greater than 10% in just 28 days of dosing was achieved at a dose of just 0.1 mg/kg, with a similar effect observed at the 1.0 mg/kg dosing group. Through X-ray absorptiometry analysis no consistent effect on absolute fat mass was observed, whereas muscle showed a qualitative trend that increases with dosage. This means that RAD-140 has been shown to increase muscle mass without having a significant impact on fat deposits.

Clinical chemistry indicated the expected lowering of lipids (LDL, HDL, and triglycerides). Despite the rather dramatic increases in body weight over such a short time, there was no elevation of liver enzyme transaminase levels in any animal at any dose >2 fold over its baseline value which indicates this compound will not have adverse effects upon the liver.

It is efficacy selective because it is fully anabolic on muscle but demonstrates less than complete efficacy on the prostate and seminal vesicles and can partially antagonize the stimulation of the seminal vesicles induced by testosterone.

It has been shown that RAD140 has the unique property of countering the prostate-enlargement caused by testosterone use, which means it has gained use as a stacking agent for highly androgenic steroids that can cause this undesired effect in order to prevent the symptoms.


RAD140 is an amazing compound that increases the building and strengthening of muscle tissue and bone tissue but does not have a significant impact on other areas of the body. It is more effective than testosterone at inducing muscle growth without any of the negative side effects. It also has potential to aid in the preservation of neuronal tissue contributing to a delay in the onset of Alzheimer’s and other neurodegenerative conditions as well as helping prevent damage after a stroke.

Product FAQ

RAD-140 is a research SARM designed to imitate testosterone without the associated side effects. When taken, it helps build muscle mass and strength, improves athletic performance, and speeds up recovery time between workouts. It’s used for the medical treatment of muscle-related conditions and bodybuilding activities.

Subjects who use RAD-140 may experience increased lean muscle mass, improved strength and endurance, and accelerated recovery time between workouts. Some studies have indicated that RAD-140 may help reduce body fat levels or improve cardiovascular health.

RAD-140 binds with androgen receptors to simulate the effects of testosterone minus some undesirable side effects that often come with other hormone replacement therapies. By working directly with these essential muscle growth regulators, RAD-140 can stimulate significant results without compromising overall health.

RAD 140 is widely known as the “strongest SARM” due to its anabolic ratio of 90:1. Clinical studies demonstrate that it has similar effects to testosterone enanthate but with 1% of the side effects associated with steroids. The overall preclinical profile of RAD140 is also excellent, making it a potent and safe anabolic.

MK-2866 is one product. While RAD 140 strips the body of fat and stimulates muscle growth, MK-2866 ensures that bones can strengthen to support this new bulk. Other products that one may pair with RAD 140 include Cardarine (GW-501516) or LGD-4033. The combination of these SARMs can help improve overall performance, muscle growth, and fat loss.