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DROSTANOLONA · 50 MG/ML, 10X1 ML | Definición Extrema. Efecto Secante.

Product Details

  • Technical Name: Drostanolona 50 mg/mL, Solución Inyectable para Uso Humano
  • Laboratory / Brand: Kinetix Pharma
  • Active Ingredient (INN): Propionato de drostanolona
  • Pharmaceutical Form: Solución Inyectable Intramuscular
  • Concentration: 50 mg / mL
  • CAS Number: 521-12-0
  • Internal SKU: SKU-DROSTANOLONE-50MG-10X1ML-521120
Kinetix Pharma Propionato de drostanolona Solución Inyectable Intramuscular CAS: 521-12-0
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Product · esteroides

DROSTANOLONA · 50 MG/ML, 10X1 ML | Definición Extrema. Efecto Secante.

Muscle Growth Recovery Longevity & Performance

10 Servings Per Container: US$10.00 / serving

(No reviews)
US$99.99 USD
In stock (10,000 piece)
Drostanolone 50 mg/mL, from Kinetix Pharma, made in the Czech Republic. Each package contains 10 ampoules of 1 mL each, with a concentration of 50 mg/mL. This is a pharmaceutical-grade injectable anabolic steroid intended for human use. The active ingredient is drostanolone propionate, a DHT derivative that produces extreme definition, muscle hardness, drying effect, and maximum vascularity. Used for cutting cycles and competition preparation. CAS: 521-12-0. Molecular formula: C₂₃H₃₆O₃. Store at room temperature (15-25°C) in a dry place protected from light. Do not refrigerate. WARNING: This product is an anabolic androgenic steroid and its use must be supervised by a physician. Banned by WADA. May cause hormonal axis suppression and adverse effects on lipid profile.

Drostanolone, known worldwide as Masteron, is an injectable anabolic steroid derived from dihydrotestosterone (DHT). It is known for its potent "drying" effect and its ability to give muscle a hard, dense, and vascular appearance, making it the compound of choice for athletes in cutting or pre-competition phases.

The problem it solves: During competition preparation, athletes need to eliminate subcutaneous fluid retention so that musculature appears at its maximum expression. Drostanolone solves this by offering a potent anti-estrogenic and muscle-hardening effect without causing water retention, allowing for a stage-ready look without resorting to other agents. It is used to "sculpt" the physique, giving a "rocky," dense muscle appearance that is highly valued in bodybuilding.

Primary Benefit: Hard, Defined Muscle without Fluid Retention

At its core, drostanolone is designed to reduce subcutaneous water, giving muscle a denser, harder, and more vascular appearance. As a DHT derivative, it is non-aromatizable, meaning it does not convert to estrogen, eliminating the risk of gynecomastia and estrogen-induced fluid retention. Additionally, it has demonstrated anti-estrogenic activity, blocking or competing for estrogen receptors in certain tissues. Its potent androgenic effect translates to increased aggressiveness and focus in training, as well as a strong stimulus for fat burning.

Secondary Benefits: Definition, Vascularity, and Performance

Drostanolone's action offers additional benefits:

Drying and Anti-Estrogenic Effect: Drostanolone reduces subcutaneous water and has demonstrated anti-estrogenic activity, blocking or competing for estrogen receptors in certain tissues. This makes it a valuable tool for combating estrogenic effects in the cycle and achieving a dry, defined physique.

Increased Vascularity: Subcutaneous water reduction allows veins to be more visible, creating a vascular and "ripped" appearance that is highly desired in fitness and bodybuilding. Drostanolone is known for producing one of the best vascularities among all steroids.

Muscle Hardness and Density: Drostanolone gives muscle a "rocky," dense appearance with superior aesthetic quality. It is the ideal compound for "sculpting" the physique and achieving a stage-ready appearance.

Increased Aggressiveness and Focus: As a DHT derivative, it has a potent androgenic effect that translates to increased aggressiveness and focus in training, allowing for more intense and productive sessions.

Fat Burning Stimulation: Drostanolone stimulates lipolysis and fat oxidation, making it an excellent ally for body fat loss during cutting phases.

Pairing Strategy: Drostanolone

Drostanolone is typically used in cutting cycles and competition preparation. It is frequently combined with:
- Testosterone (Propionate or Enanthate) to maintain hormonal function and libido
- Trenbolone for extreme definition and maximum hardness
- Stanozolol or Oxandrolone for additional drying effect and vascularity
- Boldenone for recomposition cycles with sustained gains

Typical cycles last 8-12 weeks, depending on the ester used (Propionate for short cycles, Enanthate for longer cycles). Liver support and lipid monitoring are recommended due to its impact on lipid profile.
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DROSTANOLONA · 50 MG/ML, 10X1 ML | Definición Extrema. Efecto Secante.

Drostanolona: Definición Extrema. Efecto Secante.

Para el atleta que busca esculpir un físico seco, duro y vascularizado para el escenario o la competición, Drostanolone (Masteron) representa la herramienta definitiva para la definición extrema. Este esteroide inyectable derivado de la DHT es el compuesto de elección para lograr un músculo "rocoso", denso y con una vascularidad máxima.

Beneficio Principal: Definición y Efecto Secante

Drostanolone es un derivado de la DHT no aromatizable con actividad antiestrogénica. La evidencia clínica y la experiencia deportiva han demostrado:

Efecto secante - reducción del agua subcutánea.

Vascularidad y definición muscular extremas.

Dureza y densidad muscular incomparables.

Actividad antiestrogénica natural.

Beneficios Adicionales: Estética y Rendimiento

Físico más Seco y Duro: Sin retención de agua.

Vascularidad Máxima: Venas prominentes y músculo "rasgado".

Músculo "Rocoso": Densidad y calidad estética superior.

Aumento de Agresividad: Enfoque y rendimiento en el entrenamiento.

Ideal para Ciclos de Definición y Pre-Competición

Drostanolone es la elección perfecta para ciclos de definición y preparación para competición, donde el objetivo es lograr la máxima definición muscular, dureza y vascularidad, logrando un físico de escenario seco, denso y extremadamente definido.

Key Benefits of Drostanolone Extreme Definition and Drying Effect Drostanolone is the compound of choice for athletes seeking a dry, hard, and vascular physique. Its potent drying effect reduces subcutaneous water, giving muscle a denser, "rocky," and more defined appearance, ideal for the stage and competition. Natural Anti-Estrogenic Activity Drostanolone has demonstrated anti-estrogenic activity, blocking or competing for estrogen receptors in certain tissues. This makes it a valuable tool for combating estrogenic effects in the cycle without the need for additional aromatase inhibitors. Maximum Vascularity Subcutaneous water reduction allows veins to be more visible, creating a vascular and "ripped" appearance that is highly desired. Drostanolone is known for producing one of the best vascularities among all steroids. Muscle Hardness and Density Drostanolone gives muscle a "rocky," dense appearance with superior aesthetic quality. It is the ideal compound for "sculpting" the physique and achieving a stage-ready appearance with hard, defined muscles. Increased Aggressiveness and Focus As a DHT derivative, it has a potent androgenic effect that translates to increased aggressiveness and focus in training, allowing for more intense and productive sessions. This effect is especially valued by athletes who need to be at their maximum mental and physical performance. Fat Burning Stimulation Drostanolone stimulates lipolysis and fat oxidation, making it an excellent ally for body fat loss during cutting phases. It helps maintain a dry, defined physique while losing fat. Non-Aromatizable - No Estrogenic Effects As a DHT derivative, drostanolone is non-aromatizable, meaning it does not convert to estrogen. This eliminates the risks of gynecomastia and estrogen-induced fluid retention.
Function and Mechanism of Action of Drostanolone Drostanolone is an injectable anabolic steroid derived from dihydrotestosterone (DHT). Its chemical name is 17β-hydroxy-2α-methyl-5α-androstan-3-one. It is known worldwide as Masteron. It was originally developed for the treatment of breast cancer in women and has been widely used in the sports context for its definition profile. Detailed Mechanism of Action: Androgen Receptor Activation: Drostanolone binds to the androgen receptor (AR) in muscle tissue and other tissues with high affinity, initiating gene transcription that promotes protein synthesis and muscle growth. Drying Effect: Drostanolone significantly reduces subcutaneous and extracellular water, giving muscle a denser, harder, and more vascular appearance. This effect is highly valued in cutting and competition preparation phases. Anti-Estrogenic Activity: Drostanolone has demonstrated anti-estrogenic activity, blocking or competing for estrogen receptors in certain tissues. This makes it a valuable tool for combating estrogenic effects in the cycle. Absence of Aromatization: As a DHT derivative, drostanolone is not a substrate for the aromatase enzyme, so it is not converted to estradiol. This eliminates the risks of gynecomastia and fluid retention. Lipolysis Stimulation: Drostanolone stimulates lipolysis and fat oxidation, promoting the utilization of fats as an energy source during exercise and helping maintain a dry, defined physique. Potent Androgenic Effect: As a DHT derivative, it has a potent androgenic effect that translates to increased aggressiveness, focus, and libido, as well as a strong stimulus for fat burning. Half-Life: The propionate ester (the most common in the 50 mg/mL presentation) has a half-life of approximately 2-3 days, requiring frequent injections (every 2-3 days) to maintain stable plasma levels. The enanthate ester has a half-life of approximately 8-10 days. Recent Clinical Evidence (2025-2026): Drostanolone continues to be the subject of research for its definition profile and its ability to improve muscle aesthetics. Its drying and anti-estrogenic effect makes it a compound of interest in clinical and sports research.
How to Use Drostanolone Route of Administration: Intramuscular (IM). Drostanolone is administered via deep intramuscular injection. Rotating injection sites is recommended to avoid scar tissue accumulation. Dosage: Dosage should be determined by a physician according to indications and patient condition. General dosage guidelines for drostanolone include: Dosage for Men (Cutting): 300-500 mg per week, administered in injections every 2-3 days (e.g., 100 mg every 2 days or 150 mg every 3 days). Dosage for Men (Advanced): 500-700 mg per week, administered in injections every 2 days. Dosage for Men (Pre-Competition): 400-600 mg per week, combined with other cutting compounds. Dosage for Women: Not recommended due to high risk of virilization and potent androgenic effect. Frequency: Administration every 2-3 days due to its half-life of approximately 2-3 days (Propionate). For Enanthate, weekly or every 10 days administration. Treatment Duration: For cutting cycles, 8-12 week cycles are recommended. Drostanolone is typically used in the last 6-8 weeks of a cutting cycle to maximize the drying effect. Post-Cycle Therapy (PCT): A PCT is recommended after any drostanolone cycle due to hormonal axis suppression. Common protocols include: - Enclomiphene 12.5-25 mg/day for 3-4 weeks - Tamoxifen (Nolvadex) 20/20/10/10 mg for 4 weeks Liver Support: Although drostanolone is not 17α-alkylated (reducing its hepatotoxicity), liver support is recommended for general health: - TUDCA 250-500 mg/day - NAC (N-Acetylcysteine) 600-1200 mg/day - Milk Thistle (Silymarin) 500-1000 mg/day Lipid Support: Drostanolone may affect lipid profile, reducing HDL cholesterol. Recommended: - Omega-3 (EPA/DHA) 3-6 g/day - Regular lipid profile monitoring Storage: Store in a cool, dry place, protected from light and at controlled temperature (15-25°C). Do not refrigerate. Keep out of reach of children. Important Notice: Product intended FOR HUMAN USE under medical supervision. Drostanolone is an anabolic androgenic steroid and its use must be supervised by a physician. May cause hormonal axis suppression, adverse effects on lipid profile, acne, increased aggressiveness, mood changes, and in women, virilization. Not recommended for individuals with cardiovascular disease, liver disease, kidney disease, prostate cancer, or in pregnant or breastfeeding women.
Ingredients of Drostanolone Active Ingredient: Drostanolone Propionate: A DHT-derived injectable anabolic steroid, known for its potent drying effect and ability to give muscle a hard, dense, and vascular appearance. Molecular formula: C₂₃H₃₆O₃. Molecular weight: 360.53 g/mol. CAS: 521-12-0. Chemical name: 17β-hydroxy-2α-methyl-5α-androstan-3-one propionate. Excipients: Each 1 mL ampoule contains 50 mg of drostanolone propionate in the following excipients (according to standard formulations): Sesame oil or Cottonseed oil: Used as a vehicle for suspending the active ingredient. Benzyl alcohol: Used as a preservative and bacteriostatic agent (generally 1-2%). Benzyl benzoate: Used as a solvent and preservative (generally 15-20%). Note: Specific excipients may vary by manufacturer. Consult the product leaflet for the complete list of excipients. Note for Users: This product is a pharmaceutical-grade medication manufactured under strict quality control standards (GMP) by Kinetix Pharma, in the Czech Republic. Each package contains 10 ampoules of 1 mL each, with a concentration of 50 mg/mL.
Onset Time & Expected Results of Drostanolone Onset of Action (Weeks 1-2): Drostanolone begins acting within the first hours after intramuscular injection. Effects on protein synthesis and the drying effect are observed within the first days of treatment. The half-life of approximately 2-3 days (Propionate) allows for rapid onset of action. Users report a feeling of "dryness" and muscle hardness within the first 3-5 days. Measurable Benefits (Weeks 2-4): The first measurable changes in definition and vascularity begin to be visible within the first 2-4 weeks of consistent use. Musculature appears denser, drier, and more "ripped." Strength in compound movements also shows progress during this period. Full Effect (Weeks 6-8): For maximum definition and muscle hardness, the full effect often requires 6-8 weeks of consistent use. Vascularity is at its maximum and the physique takes on a stage-ready appearance. Projected Results (8-12 week cycle): - Muscle definition increase: Significant reduction in subcutaneous water - Vascularity increase: Visible veins and "ripped" musculature - Muscle hardness: Denser, more "rocky" muscles - Body fat loss: 2-4% reduction in body fat percentage - Strength increase: Improvement in major lifts - Recovery improvement: Reduced recovery time between sessions Factors Influencing Results: The speed and magnitude of results depend on dose administered, adherence to the cycling protocol, nutrition quality (caloric deficit and high protein intake), training type, individual metabolism, and genetics.
Clinical Research & 3rd Party Test Results of Drostanolone Scientific evidence on drostanolone comes from decades of clinical use and experience in the sports context. Clinical Evidence in Humans: Drying Effect: Drostanolone is known for its ability to reduce subcutaneous water and give muscle a denser, harder, and more vascular appearance. This effect is highly valued in cutting and competition preparation phases. Anti-Estrogenic Activity: Drostanolone has demonstrated anti-estrogenic activity, blocking or competing for estrogen receptors in certain tissues. This makes it a valuable tool for combating estrogenic effects in the cycle. Anabolic Effects: Drostanolone has demonstrated lean muscle mass gains and improved definition in multiple sports experiences. Its definition profile makes it a popular compound for athletes seeking an aesthetic physique. Effects on Lipid Profile: Drostanolone may have adverse effects on lipid profile, reducing HDL cholesterol. Lipid level monitoring during use is recommended. Effects on Liver Function: Drostanolone is not 17α-alkylated, significantly reducing its hepatotoxicity compared to oral steroids. Safety Considerations: Common Side Effects: Hormonal axis suppression, HDL cholesterol reduction, acne, increased aggressiveness, mood changes, and in women, virilization. Serious Side Effects: Severe hormonal axis suppression, adverse cardiovascular effects, and in women, virilization (facial hair growth, voice deepening, clitoromegaly). Contraindications: Hypersensitivity to drostanolone, prostate cancer, severe cardiovascular disease, severe liver disease, pregnancy, and breastfeeding. Regulatory Status: Drostanolone is not approved for human use in most countries. It is classified as a prohibited substance by the World Anti-Doping Agency (WADA) and the International Olympic Committee (IOC). Kinetix Pharma Quality Standards: Pharmaceutical Grade: Pharmaceutical-grade medication for human use. Manufacturing: Manufactured in the Czech Republic under strict GMP standards by Kinetix Pharma. Quality Control: Each batch is subjected to quality control testing to ensure purity, potency, and sterility.

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