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SUSTENON 250 MG/ML, 10X1 ML | Liberación Inteligente. Rendimiento Sostenido.

Product Details

  • Technical Name: Sustenon 250, Solución Inyectable para Uso Humano - Testosterona (mezcla de ésteres: Propionato, Fenilpropionato, Isocaproato, Decanoato)
  • Laboratory / Brand: Kinetix Pharma
  • Active Ingredient (INN): Testosterona (mezcla de ésteres: Propionato, Fenilpropionato, Isocaproato, Decanoato)
  • Pharmaceutical Form: Solución Inyectable Intramuscular
  • Concentration: 250 mg / mL
  • CAS Number: 58-22-0
  • Internal SKU: SKU-SOSTENON-250-58220
Kinetix Pharma Testosterona (mezcla de ésteres: Propionato, Fenilpropionato, Isocaproato, Decanoato) Solución Inyectable Intramuscular CAS: 58-22-0
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SUSTENON 250 MG/ML, 10X1 ML | Liberación Inteligente. Rendimiento Sostenido.

Muscle Growth Recovery

10 Servings Per Container: US$10.00 / serving

(No reviews)
US$99.99 USD
In stock (10,000 piece)
Sostenon 250 is a masterful blend of four testosterone esters designed to provide a smart, sustained release profile. This formulation combines Testosterone Propionate (30 mg), Testosterone Phenylpropionate (60 mg), Testosterone Isocaproate (60 mg), and Testosterone Decanoate (100 mg) to deliver a complete anabolic experience that covers everything from immediate impact to prolonged maintenance. Developed in the Czech Republic under the highest pharmaceutical standards by Kinetix Pharma, Sostenon 250 is the definitive tool for athletes seeking sustained performance and precise cycle control.

This product positions itself as the undisputed foundation for any serious cycle. Its key differentiation lies in European pharmaceutical quality, clinically validated multi-ester technology (based on Sustanon®), and the ampoule format that guarantees purity and potency in every dose. Ideal for the informed consumer seeking precise cycle control, maximum results, and the safety of a product manufactured under the highest standards.

The problem it solves: During a bulking or performance cycle, athletes and bodybuilders face the dilemma of wanting the anabolic benefits of testosterone without constant hormonal fluctuations or the need for daily injections. Sostenon solves this by offering a dual-release profile: immediate action for training and energy, combined with sustained release to maintain a continuous anabolic state.

Primary Benefit: Smart Release and Sustained Performance

At its core, Sostenon 250 is designed to provide a unique pharmacokinetic profile that combines the fast action of short-chain esters (propionate and phenylpropionate) with the prolonged release of long-chain esters (isocaproate and decanoate). This synergy of four esters offers a rapid initial peak of energy and focus, followed by a smooth transition to stable anabolic levels and sustained release that maintains a continuous anabolic state. A clinical study demonstrates that a single dose of Sostenon 250 elevates total plasma testosterone levels to approximately 70 nmol/l (peak Cmax), reached between 24-48 hours after administration, with levels returning to the lower limit of the normal male range in approximately 21 days.

Secondary Benefits: Energy, Focus, and Cycle Control

Sostenon 250's action offers additional benefits:

Immediate Action: Propionate and phenylpropionate provide a rapid boost for training, energy, and mental focus from the first hours, allowing for more intense and productive training sessions.

Smooth Transition: Phenylpropionate and isocaproate offer a smooth transition and early stabilization of hormonal levels, avoiding peaks and valleys that can affect performance and mood.

Sustained Release: Decanoate provides prolonged release that maintains stable anabolic levels for weeks, ensuring a continuous anabolic state without the need for frequent injections.

Convenient Dosing: The ester combination allows for a dosing schedule of one injection every 10-14 days, facilitating prolonged cycles of 8-12 weeks.

Cycle Control: The smart release profile allows for precise cycle control, with the ability to adjust administration frequency according to individual needs.

Pairing Strategy: Sostenon 250

Sostenon 250 is typically used as a base in bulking and performance cycles. It is frequently combined with:
- Nandrolone (Decanoate or Phenylpropionate) for a bulking cycle with joint protection
- Boldenone for recomposition cycles with sustained gains
- Oxandrolone or Stanozolol for cutting cycles with minimal fluid retention
- Drostanolone (Masteron) for muscle hardness and definition

Typical cycles last 10-12 weeks. The use of aromatase inhibitors (such as Anastrozole) is recommended to control estrogen levels and liver support for general health.
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SUSTENON 250 MG/ML, 10X1 ML | Liberación Inteligente. Rendimiento Sostenido.

Sustenon 250: Liberación Inteligente. Rendimiento Sostenido.

Para el atleta que busca el perfil de testosterona más completo y versátil, Sostenon 250 de Kinetix Pharma representa la solución definitiva. Esta mezcla magistral de cuatro ésteres de testosterona ofrece una liberación inteligente que cubre desde el impulso inmediato hasta el mantenimiento prolongado, todo en una sola inyección.

Beneficio Principal: Liberación Inteligente y Rendimiento Sostenido

Sostenon 250 combina cuatro ésteres de testosterona en una sinergia única. La evidencia clínica y la experiencia deportiva han demostrado:

Pico inicial rápido de energía y enfoque (24-48 horas).

Transición suave y estabilización temprana.

Liberación sostenida y estado anabólico continuo.

Niveles plasmáticos de testosterona hasta 70 nmol/l.

Beneficios Adicionales: Energía, Enfoque y Control

Acción Inmediata: Impulso rápido para el entrenamiento.

Transición Suave: Sin picos ni valles hormonales.

Liberación Prolongada: Una inyección cada 10-14 días.

Control de Ciclo: Perfil de liberación inteligente.

Ideal para Ciclos de Volumen y Rendimiento

Sostenon 250 es la elección perfecta para ciclos de volumen y rendimiento, donde el objetivo es maximizar el potencial anabólico con un control preciso del ciclo y una dosificación conveniente.

Key Benefits of Sostenon 250 Smart Release Profile Sostenon 250 combines four testosterone esters in a unique synergy that provides a complete pharmacokinetic profile: fast action (propionate), smooth transition (phenylpropionate and isocaproate), and sustained release (decanoate). This synergy ensures stable hormonal levels and a continuous anabolic state. Immediate Action for Training Propionate (30 mg) and phenylpropionate (60 mg) provide a rapid initial peak of energy, mental focus, and training aggression from the first hours, allowing for more intense and productive sessions. Smooth Transition and Early Stabilization Phenylpropionate (60 mg) and isocaproate (60 mg) offer a smooth transition and early stabilization of hormonal levels, avoiding peaks and valleys that can affect performance and mood. Sustained Release and Continuous Anabolic State Decanoate (100 mg) provides prolonged release that maintains stable anabolic levels for weeks, ensuring a continuous anabolic state without the need for frequent injections. Convenient Dosing The ester combination allows for a dosing schedule of one injection every 10-14 days, facilitating prolonged cycles of 8-12 weeks with minimal discomfort. Precise Cycle Control The smart release profile allows for precise cycle control, with the ability to adjust administration frequency according to individual needs and a more predictable "clearance window." Increased Strength and Muscle Mass As a testosterone base, Sostenon 250 provides significant increases in strength and muscle mass, with quality gains that are easily maintainable.
Function and Mechanism of Action of Sostenon 250 Sostenon 250 is a masterful blend of four testosterone esters designed to provide a smart, sustained release profile. Each ester has a specific function in the pharmacokinetic profile: Ester Composition: Ester: Propionate | Amount: 30 mg | Duration: Short (1-2 days) | Function: Rapid initial peak of energy and focus Ester: Phenylpropionate | Amount: 60 mg | Duration: Intermediate (4-5 days) | Function: Smooth transition and early stabilization Ester: Isocaproate | Amount: 60 mg | Duration: Intermediate (7-8 days) | Function: Maintenance of stable anabolic levels Ester: Decanoate | Amount: 100 mg | Duration: Long (15-21 days) | Function: Sustained release and continuous anabolic state Detailed Mechanism of Action: Unique Pharmacokinetic Profile: The synergy of the four esters provides a rapid initial peak of energy and focus (24-48 hours), followed by a smooth transition to stable anabolic levels and sustained release that maintains the continuous anabolic state for weeks. Androgen Receptor Activation: The released testosterone 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. Protein Synthesis and Nitrogen Retention: Testosterone increases the efficiency with which the body uses proteins to build muscle tissue, resulting in a positive nitrogen balance and quality muscle growth. Plasma Levels: A clinical study demonstrates that a single dose of Sostenon 250 elevates total plasma testosterone levels to approximately 70 nmol/l (peak Cmax), reached between 24-48 hours after administration. Levels return to the lower limit of the normal male range in approximately 21 days.
How to Use Sostenon 250 Route of Administration: Deep Intramuscular (IM). Sostenon 250 is administered via deep intramuscular injection in the glute, deltoid, or thigh. 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 Sostenon 250 include: Dosage for Men (Bulking/Base): 250-500 mg per week, administered in 1 injection (250-500 mg once per week). Dosage for Men (Advanced): 500-750 mg per week, administered in 1-2 injections. Dosage for Men (Maintenance/TRT): 100-200 mg every 10-14 days. Dosage for Women: Not recommended due to high risk of virilization. Frequency: Weekly administration (once per week) or every 10-14 days, depending on dosage and cycle goals. The ester combination allows for flexible dosing. Treatment Duration: For bulking and performance cycles, 10-12 week cycles are recommended. The smart release profile allows for prolonged cycles with sustained results. Post-Cycle Therapy (PCT): An aggressive PCT is recommended after any Sostenon 250 cycle due to hormonal axis suppression. Common protocols include: - Enclomiphene 25 mg/day for 4 weeks - Tamoxifen (Nolvadex) 40/40/20/20 mg for 4 weeks - Clomiphene (Clomid) 50/50/25/25 mg for 4 weeks - HCG (if available) 250-500 IU every 3-4 days during the cycle Estrogen Support: The use of aromatase inhibitors is recommended as needed: - Anastrozole 0.25-0.5 mg every other day or according to symptoms - Exemestane 12.5-25 mg every other day or according to symptoms Liver Support: Although testosterone is not 17α-alkylated, liver support is recommended for general health: - TUDCA 250-500 mg/day - NAC (N-Acetylcysteine) 600-1200 mg/day 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. Sostenon 250 is an anabolic androgenic steroid and its use must be supervised by a physician. May cause hormonal axis suppression, gynecomastia, fluid retention, hypertension, acne, mood changes, and adverse effects on lipid profile. Not recommended for individuals with cardiovascular disease, liver disease, kidney disease, prostate cancer, or in pregnant or breastfeeding women.
Ingredients of Sostenon 250 Ester Composition: Each 1 mL ampoule contains 250 mg of a blend of testosterone esters in the following proportion: Testosterone Propionate: 30 mg Testosterone Phenylpropionate: 60 mg Testosterone Isocaproate: 60 mg Testosterone Decanoate: 100 mg Total: 250 mg Active Ingredient: Testosterone (ester blend): A natural anabolic androgenic steroid that, in this four-ester formulation, provides a smart, sustained release profile. Molecular formula: C₁₉H₂₈O₃ (testosterone base). CAS: 58-22-0 (testosterone). Excipients: Each 1 mL ampoule contains 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 250 mg/mL.
Onset Time & Expected Results of Sostenon 250 Onset of Action (Hours to Days): Sostenon 250 begins acting within the first hours after intramuscular administration. Propionate (30 mg) and phenylpropionate (60 mg) provide a rapid initial peak of energy and focus within 24-48 hours. A clinical study demonstrates that plasma testosterone levels reach a peak of approximately 70 nmol/l between 24-48 hours after administration. Measurable Benefits (Weeks 1-3): The first measurable changes in energy, focus, and training performance begin to be visible within the first 1-3 weeks of consistent use. Users report improvement in strength, recovery, and body composition. Full Effect (Weeks 6-10): For maximum muscle mass and strength development, the full effect often requires 6-10 weeks of consistent use. Typical lean mass gains are 4-6 kg in 10-12 week cycles, depending on dosage and nutrition. Projected Results (10-12 week cycle): - Lean muscle mass increase: 4-6 kg (depending on dosage and nutrition) - Strength increase: Bench press improvement (10-25 kg), squats (15-30 kg), deadlifts (15-30 kg) - Energy and focus increase: Notable improvement from the first week - Recovery improvement: Reduced recovery time between sessions - Libido increase: Significant improvement in sexual function Factors Influencing Results: The speed and magnitude of results depend on dose administered, adherence to the cycling protocol, nutrition quality (caloric surplus and high protein intake), training type, individual metabolism, and genetics.
Clinical Research & 3rd Party Test Results of Sostenon 250 Scientific evidence on Sostenon 250 comes from decades of clinical use and experience in the sports context. Clinical Evidence in Humans: Pharmacokinetic Profile: A clinical study demonstrates that a single dose of Sostenon 250 elevates total plasma testosterone levels to approximately 70 nmol/l (peak Cmax), reached between 24-48 hours after administration. Levels return to the lower limit of the normal male range in approximately 21 days. Anabolic Effects: Testosterone has demonstrated lean muscle mass gains and body composition improvement in multiple clinical studies. Sostenon 250, with its smart release profile, offers a complete and sustained anabolic experience. Effects on Strength and Performance: Testosterone has demonstrated strength and physical performance increases in multiple studies, with significant improvements in power and training capacity. Effects on Lipid Profile: Testosterone may have adverse effects on lipid profile, reducing HDL cholesterol. Lipid level monitoring during use is recommended. Safety Considerations: Common Side Effects: Hormonal axis suppression, gynecomastia, fluid retention, hypertension, acne, increased aggressiveness, mood changes, and HDL cholesterol reduction. Serious Side Effects: Severe hormonal axis suppression, adverse cardiovascular effects, severe gynecomastia, and in women, virilization. Contraindications: Hypersensitivity to testosterone, prostate cancer, severe cardiovascular disease, severe liver disease, pregnancy, and breastfeeding. Regulatory Status: Testosterone is a prescription medication 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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SUSTENON 250 MG/ML, 10X1 ML | Liberación Inteligente. Rendimiento Sostenido. SUSTENON 250 MG/ML, 10X1 ML | Liberación Inteligente. Rendimiento Sostenido. SUSTENON 250 MG/ML…
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