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⚠️ Important
All products on our website are intended solely for laboratory and research purposes. The information provided for each product is for educational and informational purposes only. These products are not intended for use in or on humans or animals. They are recommended to be handled only by qualified professionals in a controlled environment.
Andarine S4 | 40mg/1,5ml
Stabilized Pre-Mixed Pen
Temporarily Sold Out – Restocking Soon!
| Quantity | Price | Discount |
|---|---|---|
| 3-5 | $104.50 | 5% |
| 6-9 | $102.30 | 7% |
| 10+ | $99.00 | 10% |
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Complete Your Kit — Add Pen Needles
Stabilized Formula
– tolerant of short temperature deviations above 46°F
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What is MSSPT technology?
How We Keep Peptides Stable Inside a Pen
Our MSSPT™ (Molecular Structure Stabilization Process Technology) keeps every peptide molecule intact and active—from production to the moment you click the pen.
Our MSSPT™ (Molecular Structure Stabilization Process Technology) keeps every peptide molecule intact and active—from production to the moment you click the pen.
Why it matters: Peptides are sensitive to heat, light, oxygen, pH swings, and shaking. MSSPT™ is our end‑to‑end method to protect them at every stage.
The MSSPT™ Playbook:
- Make the Molecule Tougher: Smart chemistry tweaks and protective groups reduce weak spots.
- Build the Right Microenvironment: Buffers, antioxidants, and stabilizers actively prevent degradation.
- Optimize Storage & Process: Freeze-drying, controlled humidity, and temperature safeguards ensure long-term stability.
- Engineer the Pen as a Shield: Light/oxygen barriers, desiccants, and low-shear pathways protect during use.
- Prove It With Data: Rigorous stability studies and analytics guarantee potency and safety.
What This Means For You: Reliable potency, convenient multi-peptide delivery, and consistent safety dose after dose.
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Research-Grade Quality
Every pen is manufactured under strict quality control for consistent and reliable lab use.
Stabilized Pre-Mixed Formula
No reconstitution required – optimized for convenience and accuracy in research.
Verified Source & Purity
Third-party tested for purity and identity to meet research standards.
Temperature-Controlled Shipping
Shipped in insulated packaging with cold packs to maintain optimal temperature. Every order is tracked to ensure safe and timely delivery.
Proper storage
To guarantee the highest quality of our research peptides, we prioritize proper delivery and storage conditions. Every order is shipped in specialized cooling boxes designed to maintain the necessary temperature throughout transit, ensuring that your peptides arrive in optimal condition.
Upon receiving your peptides, proper storage is essential to preserve their stability and potency. We recommend keeping them refrigerated at a temperature between 2°C and 8°C. This safeguards their integrity, allowing them to maintain their effectiveness throughout their shelf life.
For research use only.
Shipping details
Fast and secure shipping of your order with FedEx, ensuring the highest quality and reliability at every step.
Order Processing & Packaging
- Once your payment is confirmed via bank transfer or debit/credit card, we ship your order on the next business day.
- All orders are carefully packaged in temperature-controlled cooling boxes to maintain peptide integrity during transit.
Delivery Timeframe
- Standard U.S. delivery time: 1 to 3 business days.
- Orders are shipped exclusively via FedEx for a fast, safe, and reliable delivery experience.
Tracking & Order Confirmation
- Once your payment is processed and order is shipped, you will receive an email confirmation with your tracking number.
- You can track your order in real time using the FedEx tracking page.
How does the pen work?
The Peptide Pen is an advanced, pre-mixed device designed for accurate dosing in research applications. This ready-to-use pen eliminates the need for mixing, ensuring efficiency and reliability in every use.
Key Features of the Peptide Pen
✔ Pre-Mixed & Ready-to-Use – No need for dilution or manual preparation.
✔ Precision Dosing – Each pen is pre-calibrated for consistent and accurate measurement.
✔ Sterile & Secure – Manufactured in a controlled laboratory environment and packaged under strict sterile conditions to maintain purity and stability.
✔ User-Friendly Design – Ergonomic and easy-to-handle, making research more efficient.
How to Use the Peptide Pen?
1️⃣ Attach the needle – Secure it by twisting onto the pen until firmly in place.
2️⃣ Set the precise dose – Adjust the dosage dial by rotating the regulator to the desired units (ranging from 0 to 60).
3️⃣ Administer as per research protocols – Ensuring controlled and reproducible application.
4️⃣ Proper Storage – Keep the pen refrigerated between 2°C and 8°C to maintain peptide integrity and stability.
⚠ Note: Our peptides are for research use only and are not intended for human consumption.
What is Andarine S4?
Andarine (S4) is a selective androgen receptor modulator (SARM), developed to maintain and increase muscle mass, improve strength, and support bone structure without the typical side effects associated with traditional androgenic compounds. The compound is one of the first SARMs developed for scientific research and remains among the most studied molecules in this class.
Andarine demonstrates moderate anabolic action with high selectivity for muscle and bone tissue, avoiding strong impact on the prostate and other sensitive systems. This makes it suitable for research protocols focused on body recomposition, recovery after muscle loss, and maintaining physical strength under a reduced hormonal background.
Mechanism of Action of Andarine S4:
Andarine S4 binds to androgen receptors in muscle and bone tissue, where it activates genes responsible for protein synthesis and mineral density. Unlike traditional androgenic agents, Andarine does not significantly affect other tissues, such as the prostate, and does not convert to estrogen.
The molecule has a relatively short half-life, which allows more precise control of dosing and research cycles. Its action profile is balanced—strong enough to observe effects on muscle mass, yet light enough to be suitable for shorter or more moderate protocols.
Potential Scientifically Supported Benefits of Andarine S4:
Within scientific and laboratory research, the following potential effects have been observed:
- Increase in lean muscle mass, especially under deficit or immobilization;
- Improvement of physical strength and muscle density;
- Support for bone mineralization and resilience;
- Optimization of body composition with simultaneous maintenance of muscle;
- Appropriate selectivity for androgen receptors, without strong impact on other systems;
- Formula for subcutaneous administration, stabilized for easy and precise dosing.
These properties make Andarine S4 a preferred choice in laboratory settings where controlled impact on muscle and bone function is sought, without risks from unwanted hormonal interactions.
Comparison of Andarine S4 with Other SARMs
Andarine (S4) is one of the first developed SARMs and remains well known for its balanced anabolic effect, moderate strength, and relatively short half-life. Thanks to these characteristics, S4 is often compared with Ostarine (MK2866), Ligandrol (LGD-4033), and S23, occupying an intermediate position between lighter and more potent SARMs.
Compared with Ostarine, Andarine shows a stronger impact on physical strength and muscle tissue density, but with a higher risk of side effects, such as temporary visual disturbances—one of the most distinctive aspects of S4. While Ostarine is preferred in long-term and maintenance research protocols, S4 is used in more intensive cycles aimed at increasing functional strength and muscular definition.
Compared with Ligandrol, Andarine has a weaker anabolic effect but a shorter duration of action, which allows more precise dosing control. LGD-4033 surpasses S4 in lean mass accrual, while S4 shows excellent results in protocols focused on preserving muscle tissue during caloric deficit and improving density and definition.
Relative to S23, Andarine is significantly safer, with less suppression of endogenous testosterone, but with a more moderate anabolic effect. S23 often requires strict monitoring and post-protocol hormonal support, while S4 is applied successfully under more lightly controlled conditions.
Dosage and Application of Andarine S4 in Research Protocols:
Recommended research regimen: 3 units twice daily (6 units total per day), for 2–4 weeks, followed by a 4–6 week off period.
1 unit = 26.66mcg.
Total amount in pen: 150 units
Possible Side Effects of Andarine S4:
Despite its wide application in laboratory models, observations exist of certain side effects, especially with prolonged use or higher doses:
- Changes in color perception (yellowish tint)—reversible upon discontinuation;
- Temporary suppression of natural testosterone with longer cycles;
- Individual sensitivity to androgenic stimulation.
Adhering to optimal dosing and controlling application duration play a key role in limiting the manifestation of side effects.
Disclaimer
For research use only. Not for human consumption.
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