Skip to product information
1 of 1

Pen Peptide

Testolone (RAD-140) | 40mg/1.5ml

Testolone (RAD-140) | 40mg/1.5ml

Pre-Mixed Stabilized Pen

Regular price £87.00
Regular price Sale price £87.00
Sale Temporarily out of stock
Delivery in the Europe & UK within 1-3 days with DHL Express. Shipping calculated at checkout.
  • 🥇 The first peptide brand with Pre-Mixed Pen stabilized formulations
  • 📦 We ship with DHL Express in thermo-insulated packaging
  • 💳 Secure payment by card or bank transfer
  • 🧪 Purity ≥98% for precise research protocols
Stabilized formula ℹ️ The formula retains its structural integrity and bioactivity, without risk of degradation or loss of stability, even in case of temporary temperature increase above 8°C during transport. – tolerant to short-term temperature deviations above 8°C

✅ Proper storage

To ensure the optimal quality of our products, we pay special attention to the delivery and storage of peptides. All our shipments are sent in special cooling boxes that maintain the required temperature during transportation. This guarantees that the products will reach you in perfect condition.

After receiving the peptides, it is important to store them properly to preserve their stability and effectiveness. We recommend storing them at a temperature between 2°C and 8°C in a refrigerator. This ensures that the peptides retain their properties throughout their shelf life.

✅ Order and Delivery

At Pen Peptide, we ensure fast and secure delivery of your order with DHL Express, maintaining the highest quality and reliability throughout the process.

How we process your order:

Once your payment is confirmed via bank transfer or debit/credit card, we dispatch your order on the next business day.

Orders are carefully packaged in temperature-controlled cooling boxes to ensure product integrity during transportation.

Delivery timeframe:

Standard delivery time within the Europe & UK: 1 to 3 business days (typically 1-2 business days for most locations).

Deliveries are handled exclusively by DHL Express, providing a fast and reliable shipping experience.

Tracking & order confirmation:

After your payment has been successfully processed, you will receive an email confirmation with your tracking number.

You can use the provided tracking link to monitor your shipment’s progress and estimated delivery time.

With Pen Peptide, you can trust that your order will arrive quickly and in perfect condition, ensuring a seamless and efficient experience.

✅ How does the pen work?

The peptide pen is an innovative and easy-to-use device, designed for precise dosing of the substance in research settings. It is a pre-mixed pen (Pre-Mixed Pen), which means it contains an already dissolved peptide in an optimal concentration, ready for use.

Key features of the pen:

  1. Precision – Each pen is pre-dosed, ensuring accurate and consistent application.
  2. Ease of Use – No dilution or additional preparation is required.
  3. Sterility and Safety – Each product is manufactured in controlled laboratory conditions and sterile-packaged to guarantee its purity and effectiveness.

How to use the pen?

  1. Attach the needle by placing it onto the pen and twisting until fully secured.
  2. Set the desired dose – use the dosage dial by rotating the regulator to the corresponding number, which represents the selected units. The numbers displayed range from 0 to 60, indicating the units for dosing.
  3. Administer the dose according to the requirements of your research.
  4. Store the pen properly – in a refrigerator at a temperature between 2°C and 8°C to maintain the stability of the peptide.

With the pre-mixed pen from Pen Peptide, the process is simplified, efficient, and safe, ensuring optimal results for your research.

✅ Why choose Pen Peptide?

If you are looking for peptides of the highest quality with over 98% purity, Pen Peptide is one of the best places where you can easily and securely order online. At Pen Peptide, we specialize in the synthesis of highly purified peptides intended exclusively for Research & Development Use Only.

Our peptides are produced in certified GMP laboratories, adhering to strict standards of quality, safety, and control. Each product undergoes rigorous testing for purity and stability to ensure you receive research materials with verified origin and maximum effectiveness.

We understand how important fast and reliable service is for our customers. That’s why we offer express delivery within 1 to 3 business days. All shipments are securely packaged to maintain product quality during transportation.

✅ Molecular Structure Stabilization Process Technology (MSSPT)

The Molecular Structure Stabilization Process Technology (MSSPT) focuses on preserving the structural integrity and functionality of molecules under harsh conditions and during prolonged storage periods. This process may involve modification of the molecule itself, optimization of storage conditions, or the use of auxiliary components that protect the molecules from degradation.

MSSPT

Key stages of the process:

1. Molecular modification:

Chemical and genetic engineering: Involves altering the structure or composition of the molecule to make it more resistant to degradation. For example, protein cross-linking can prevent unfolding, or modification can reduce susceptibility to chemical reactions.

Chemical modification: The introduction of protective groups or changes to reactive sites can prevent unwanted chemical reactions and degradation.

2. Optimization of storage conditions:

Lyophilization (freeze-drying): This method removes water from the sample, helping to preserve structure and prevent degradation during storage.

Storage in specialized containers: Using containers that protect from light and oxygen can safeguard molecules from photodegradation or oxidation.

Controlled-release systems: These systems provide a steady concentration of the therapeutic molecule, but introduce additional challenges related to stabilizing molecules over extended release periods.

3. Use of auxiliary components:

Buffers: Buffers help maintain stable pH levels, which are crucial for many chemical reactions and biological processes.

Antioxidants: These additives can prevent or reduce oxidative degradation, which is a common cause of molecular instability.

Stabilizing agents: These help prevent aggregation, precipitation, or other forms of degradation.

4. Understanding molecular interactions:

Thermodynamic equilibrium: A fundamental understanding of the interactions between a molecule and its environment is essential for developing effective stabilization strategies.

Detergents for membrane proteins: Specialized detergents, such as those developed to stabilize membrane proteins, help maintain their structure in solution.

Molecular simulations: Techniques such as molecular dynamics can provide valuable insights into the stability and behavior of molecules.

5. Examples of stabilization techniques:

Protein stabilization: Strategies include forming disulfide bonds, using stabilizing agents or chaperones, and introducing stabilizing mutations.

Polymer stabilization: Methods include the addition of antioxidants or the use of modified clay minerals that prevent polymer degradation.

Propellant stabilization: Stabilizers are essential to prevent the decomposition of propellants and ensure their safe and reliable performance.

Pen Peptide – Proven Molecular Stabilization

Our peptide pens are developed with a strong focus on preserving the biological activity and structural stability of the active compounds. Thanks to thoroughly researched stabilization processes—including optimization of storage environments and precise modification of molecular structure—we achieve long-term durability and reliability of the peptides under appropriate storage conditions.

The MSSPT (Molecule Structure Stabilization Process Technology) we use incorporates various approaches to maintain molecular integrity, including the use of suitable buffers, antioxidants, and stabilizing agents. The MSSPT technology allows for the integration of multiple active molecules into a compact volume without compromising their structural integrity or biological effectiveness. Additional optimization of storage conditions—such as pH control and prevention of photodegradation and oxidation—ensures maximum stability and bioactivity of the peptides.

These precise measures guarantee that the final product remains effective and stable even after extended storage periods, making it a secure and reliable option for use in various research protocols.

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.

Dosage and Application of Testolone (RAD-140) in Research Protocols

Suggested research protocol: 6 units once daily for 4–6 weeks, followed by a 2–4 week off-cycle.

1 unit = 26.66mcg

Total pen content: 150 units

Possible Side Effects of Testolone (RAD-140)

Despite its high efficacy, RAD-140 has been associated with certain side effects, particularly with prolonged use or elevated dosing:

  • Potential temporary suppression of natural testosterone production;
  • Mild disruption of the hormonal axis during extended protocols;
  • Individual sensitivity reactions related to increased androgen stimulation.

Maintaining proper dosing and cycle length is essential for minimizing the risk of adverse effects and ensuring safe research conditions.

For laboratory purposes and personal observation only.

The information has been collected from numerous studies and analyses conducted over the years and is not intended for diagnosing, treating, or preventing any diseases.

View full details