What is RAD-140?

RAD-140, also known as Testolone, is a selective androgen receptor modulator (SARM) developed by Radius Health. It was originally researched as a safer alternative to testosterone therapy for muscle wasting and breast cancer. It's one of the most potent SARMs available and has become popular in performance and body composition circles.

Quick Facts

How Does It Work?

RAD-140 binds selectively to androgen receptors in muscle and bone tissue. Because it targets specific tissues rather than acting everywhere in the body like testosterone, it drives anabolic effects with far less androgenic activity. This selectivity is what makes it stand out from traditional steroids.

What It's Used For

• Increasing lean muscle mass
• Improving strength and workout performance
• Supporting muscle preservation during a calorie deficit

What to Expect

Most users notice noticeable strength gains within the first two weeks. Lean muscle mass tends to build steadily throughout the cycle without significant water retention. It also has a reputation for improving endurance and training aggression.

Possible Side Effects

• Testosterone suppression with longer or higher-dose cycles
• Elevated aggression or mood changes in some users
• Headaches, particularly during the first week of use

Cycle & Dosage Notes

A typical RAD-140 cycle runs 8–10 weeks at 10–20 mg per day. Because it can suppress natural testosterone production, a standard PCT protocol is recommended after the cycle. It stacks well with other SARMs such as LGD-4033 for bulking or Cardarine for a cutting phase.

Storage

Keep at room temperature (15–25°C), away from light and moisture. Leave in the original packaging.

This info is for research and educational purposes only. Check the laws in your country before ordering.