Name: Testolone (RAD-140) | 40mg/1.5ml
Brand: Pen Peptide
SKU: 375
Availability: InStock

Description

What Is Testolone (RAD-140)?

Testolone, also known as RAD-140, is one of the most widely studied Selective Androgen Receptor Modulators (SARMs), designed to deliver a potent anabolic effect without the severe side effects typically associated with traditional androgenic compounds. The molecule was engineered to primarily target muscle and bone tissue while maintaining hormonal balance and avoiding stimulation of unwanted receptors.

RAD-140 has been extensively researched for its strong affinity for androgen receptors and its significant potential to promote muscle growth, enhance strength, and accelerate recovery. As such, it has become a preferred compound in studies focused on physical optimization, body recomposition, and hormonal support under various stress and load models.

Mechanism of Action of Testolone (RAD-140)

Testolone selectively binds to androgen receptors, activating specific genes responsible for protein synthesis, muscle regeneration, and metabolic efficiency. This interaction stimulates muscle hypertrophy, increases strength, and supports improved bone density.

One of RAD-140’s key advantages is its ability to produce an anabolic effect comparable to that of testosterone without aromatizing into estrogen or triggering significant androgenic activity in non-target tissues. This makes it suitable for research requiring strong but controlled anabolic stimulation.

Scientifically Supported Potential Benefits of Testolone (RAD-140)

RAD-140 has been the subject of numerous laboratory studies and research models. Some of the most frequently observed potential benefits include:

Significant increase in muscle mass and strength during short to medium-term research protocols;
Improved tissue recovery following intense exertion or catabolic stress;
Preservation of lean mass during caloric deficit or hormonal imbalance;
Enhanced bone density and skeletal integrity;
No aromatization, reducing the risk of water retention or hormonal fluctuations.

RAD-140 is widely utilized in experimental models related to sports physiology, post-injury recovery, and physical adaptation under endocrine stress conditions.

Testolone (RAD-140) vs Other SARMs

Testolone (RAD-140) is considered one of the most powerful SARMs, developed to maximize anabolic activity in muscle tissue while avoiding the typical side effects associated with androgenic steroids. This positions it in direct comparison with other leading SARMs such as Ligandrol (LGD-4033), S23, and Ostarine (MK-2866).

Compared to Ligandrol—also known for muscle growth—RAD-140 delivers a more pronounced anabolic response and faster outcomes, especially in short and intensive research settings. Unlike Ligandrol, RAD-140 may also exhibit neuroprotective properties due to its interaction with certain neuroreceptors, making it of interest in cognitive support models.

When compared to S23, Testolone offers a more balanced profile between potency and tolerability. While S23 often causes marked suppression of endogenous testosterone and requires strict post-cycle hormonal management, RAD-140—despite its potency—displays a more manageable safety profile when used at appropriate doses and durations.

Relative to Ostarine, which is milder and often preferred for beginners or long-term protocols, RAD-140 is a more advanced alternative suited for research scenarios requiring significant gains in strength and muscle mass within shorter timeframes. Unlike Ostarine, RAD-140 is not typically used for maintenance but rather for active muscle building.

Testolone is frequently chosen in studies where maximum anabolic output, accelerated recovery, and high efficiency in short research cycles are key objectives—without the need for traditional androgenic agents.