Description

Technical Parameters

Introduction

OIL2

Products Description

### 1. Product Basics

STROMUSC brand Testosterone Propionate 100mg/ml, 10ml, oil for injection, is an injectable formulation based on short-acting esterified testosterone. Its main ingredients include:

* Active Ingredient: Testosterone Propionate (testosterone propionate), at a concentration of 100mg/ml

* Excipients: Typically, pharmaceutical-grade injectable oil (such as grapeseed oil or MCT oil), benzyl alcohol (as an antimicrobial preservative), and an appropriate amount of solvent (such as benzyl benzoate, to enhance solubility).

This formulation, through optimized oil phase ratio and solubility aid system, ensures rapid release of testosterone upon injection, while also exhibiting excellent tissue compatibility and metabolic stability.

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### 2. Classification System: Tiered by Usage and User Needs

STROMUSC's Testosterone Propionate can be categorized into the following three application scenarios:

1. **Competitive Users (Pre-competition Preparation)**

Bodybuilders and fighters use this product as a clean pre-competition medication to quickly increase strength and maintain firmness. It is often used in combination with products like Masteron and Winstrol.

2. **Muscle-Building Users (Short-Term Stacking)**

Fitness enthusiasts who prefer a shorter-term effect may combine testosterone propionate with short-acting steroids (such as NPP) to control water retention and increase protein synthesis.

3. **Replacement Therapy/Trial Uses**

For users undergoing hormone replacement therapy (TRT) or those trying a steroid cycle for the first time, it is often used as a low-dose trial injection due to its clear efficacy and short side effect window.

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### 3. Physical and Chemical Properties

* **Molecular Formula**: C₂₂H₃₂O₃

* **Molecular Weight**: 344.49 g/mol

* **Appearance**: Transparent or slightly yellow oily liquid, free of visible precipitation or impurities

* **Density and Viscosity**: Moderately oily, with low injection resistance; avoid excessive cold storage to prevent thickening of the oil

* **Solubility**: Insoluble in water, miscible in most fat-soluble solvents and carrier oils

* **Stability**: The drug remains stable for two years in a dark, airtight, dry environment.

This product is sterilized and filtered at 0.22 microns during processing to ensure sterility and low irritation. It is suitable for deep intramuscular injection.

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### 4. Color and Texture

STROMUSC's Testosterone Propionate Oil is a pale yellow to light gold oily liquid with uniform color and no visible particles or suspended matter. The liquid is clear, with moderate viscosity and no flocculent or precipitated matter. The color and texture of high-quality injectable oils often directly reflect the product's purity and excipient selection. This STROMUSC product fully complies with pharmaceutical-grade formulation standards in terms of appearance.

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### 5. Key Advantages

1. Rapid Onset of Action, Clear Effect

Testosterone Propionate is a short-acting testosterone ester. Blood testosterone concentrations rise rapidly within 24 hours after injection, making it suitable for training sessions that require rapid onset.

2. Minimal Water Retention, Clean Muscles

Compared to long-ester testosterone (such as enanthate or isoheptate), testosterone propionate causes less water and sodium retention, making it suitable for those seeking defined muscle definition.

3. Controllable Hormone Levels, Easily Manageable Side Effects

The short half-life means that hormone levels decline rapidly upon discontinuation, making it easier for users to manage side effects such as mood swings or sex hormone suppression.

4. **Small injection volume and good solubility**

The 100mg/ml concentration is medium-strength, with a small injection volume and minimal tissue irritation, making it suitable for continuous use or stacking with other medications.

5. **Suitable for rapid cycling and flexible pairing**

For users of short-term cycles (4-6 weeks) or with other short-term ester medications such as Trenbolone Acetate and NPP, this allows for greater flexibility in cycle construction.

### 6. Recommended Dosage and Administration (For reference only, professional guidance required)

* **Usual male dose**: 100mg per injection, 2 to 4 times per week

* **Total weekly dose**: 200-400mg, cycle length 4 to 8 weeks

* **Female use (not recommended)**: Due to the high risk of virilization, this is not recommended. A very small number of female users, under professional guidance, use doses below 25mg/week.

Injection sites may include the gluteus maximus, lateral thigh, or deltoid muscle. Rotation of injection sites is recommended to minimize muscle induration or local irritation.

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### 7. Safety and Precautions

Although the metabolic pathway of testosterone propionate is well-defined, the following potential risks remain of concern:

* **Androgen-Related Side Effects**: Acne, hair loss, benign prostatic hyperplasia

* **Cardiovascular Risks**: Increased hematocrit, elevated blood pressure, dyslipidemia

* **Testosterone Suppression**: Recovery therapy (PCT) is required after use, such as with Clomid or Nolvadex to restore endocrine function

* **Liver Effects**: While parenteral products may place less stress on the liver, regular physical examinations are still recommended for long-term use

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### 8. Storage and Transportation

* Storage Temperature: Recommended temperature is 20°C to 25°C. Avoid crystallization during refrigeration.

* Store away from light and avoid exposure to strong sunlight.

* Seal the bottle cap immediately after each use to prevent air and microorganisms from entering and contaminating the liquid.

* The unopened product typically has a shelf life of 24 to 36 months.

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### 9. Conclusion

STROMUSC's Testosterone Propionate 100mg/ml (10ml), a classic short-ester testosterone preparation, excels in formulation, efficacy, side effect management, and user experience. Whether used for rapid power gains in competitive cycles or clean muscle maintenance in bodybuilding cycles, its performance is remarkable. With appropriate cycle design and scientific post-treatment management, this STROMUSC product can be an important option for short-term performance enhancement and maintaining androgen balance. However, it is important to emphasize that all steroid preparations should be used under professional knowledge or medical guidance to ensure both health and effectiveness.