MAST 100 100mg/ml 10ml – Injectable Masteron (Drostanolone Propionate) for Lean Mass & Muscle Hardness

For athletes and bodybuilders seeking a potent, estrogen-free anabolic compound that delivers a hard, dry, and vascular physique, MAST 100 from Geneza Pharmaceuticals offers premium injectable Masteron (Drostanolone Propionate). Each 10ml vial contains 100mg/ml of Drostanolone Propionate, providing a total of 1000mg per vial. Masteron is a DHT-derived anabolic steroid prized for its ability to enhance muscle density, improve strength, and promote fat loss without the risk of estrogenic side effects, making it an ideal choice for cutting cycles and contest preparation.

What Is MAST 100 (Drostanolone Propionate / Masteron)?

MAST 100 contains the active ingredient Drostanolone Propionate, a synthetic derivative of Dihydrotestosterone (DHT). Masteron was originally developed for the treatment of breast cancer in women due to its anti-estrogenic properties. In the bodybuilding community, it is highly valued for its ability to create a hard, dense, striated muscle appearance while simultaneously promoting fat loss and strength gains.

As a DHT derivative, Drostanolone cannot aromatize into estrogen, meaning users experience no water retention, bloating, or gynecomastia. The propionate ester attached to the molecule provides a rapid onset of action (2-3 days) and a short half-life, allowing for quick clearance from the body and making it an excellent choice for athletes who need to control side effects or pass drug tests. Manufactured under strict quality standards by Geneza Pharmaceuticals, this injectable formulation ensures consistent dosing and reliable performance.

Key Benefits of MAST 100 100mg/ml

• Enhanced Muscle Hardness & Density: Gives muscles a full, dense, striated appearance ideal for competition.
• No Estrogen Conversion: Drostanolone cannot aromatize, eliminating risk of gynecomastia and estrogenic side effects.
• Significant Strength Increases: Improves strength and power output without adding water weight.
• Accelerated Fat Loss: Enhances metabolic rate and promotes a lean, hard, vascular physique.
• Anti-Estrogenic Properties: Mild anti-estrogenic effect can help reduce estrogen-related side effects when stacked with aromatizing compounds.
• Fast Onset & Clearance: Propionate ester provides rapid results and quick clearance from the body.

How to Use MAST 100 100mg/ml

MAST 100 is administered via intramuscular injection. Due to the short propionate ester, injections are typically administered every other day (EOD) to maintain stable blood levels. Typical dosing ranges from 300mg (3ml) to 700mg (7ml) per week, divided into EOD injections. For most users, 400-500mg per week is sufficient to experience significant improvements in muscle hardness and fat loss. More experienced users may push up to 700mg per week, but higher doses increase the risk of androgenic side effects such as hair loss, acne, and prostate enlargement. Always consult a healthcare professional before use. To learn more about our quality standards, visit our About Us page.

Why Choose Geneza Pharma MAST 100?

Geneza Pharmaceuticals is a globally recognized brand known for producing pharmaceutical-grade products that meet the highest standards of purity, potency, and safety. Every batch of MAST 100 undergoes rigorous third-party testing to ensure accurate dosing and reliable results. When you choose Geneza, you are choosing a brand trusted by thousands of athletes and bodybuilders worldwide for their cutting cycles and contest preparation. For additional clinical research on Drostanolone, you can explore resources through Google.

Possible Side Effects and Precautions

MAST 100 is a potent androgen and should be used with caution. Common androgenic side effects include accelerated hair loss in genetically predisposed individuals, acne, increased body hair growth, and potential prostate enlargement. Drostanolone does not aromatize, so estrogenic side effects are not a concern; however, it can suppress natural testosterone production, making post-cycle therapy (PCT) essential. Masteron is also known to have a negative impact on lipid profiles and may increase LDL cholesterol while decreasing HDL cholesterol. Regular blood work is strongly advised to monitor health markers. Individuals with pre-existing prostate, liver, or cardiovascular conditions should consult a doctor before use.

Frequently Asked Questions

How is MAST 100 different from GP STAN 50 (Stanolone)?

While both are DHT-derived compounds, MAST 100 (Drostanolone) is a modified DHT molecule with slightly different properties, while GP STAN 50 (Stanolone) is bioidentical DHT itself. Drostanolone is considered slightly less androgenic than pure DHT but offers excellent muscle hardening and anti-estrogenic effects. Stanolone is the most potent androgen receptor agonist available.

Can women use MAST 100?

MAST 100 is considered one of the safer DHT-derived compounds for women due to its mild androgenic profile compared to other compounds. However, virilization symptoms (voice deepening, clitoral enlargement, facial hair growth) are still possible at higher doses. Female athletes typically use lower doses (50-100mg per week) and should monitor for side effects closely.

Do I need post-cycle therapy (PCT) after using MAST 100?

Yes. MAST 100 will suppress natural testosterone production, making PCT essential for restoring hormonal balance after the cycle. A standard PCT protocol using SERMs such as Nolvadex or Clomid is recommended.

Is MAST 100 good for bulking cycles?

Masteron is primarily used during cutting cycles due to its ability to promote muscle hardness and fat loss without water retention. However, it can be used in bulking cycles when stacked with more anabolic compounds like testosterone or Nandrolone to add quality lean mass without bloating.

Conclusion

MAST 100 100mg/ml from Geneza Pharmaceuticals is the premier injectable Masteron for athletes seeking a hard, dry, and vascular physique. With its powerful muscle-hardening effects, anti-estrogenic properties, and ability to promote fat loss without water retention, it stands as one of the most effective compounds for cutting phases and contest preparation. Backed by Geneza’s commitment to pharmaceutical-grade excellence, this product delivers consistent, reliable results. Order your vial today and experience the difference that premium Masteron can make.

Disclaimer: This product is intended for research and informational purposes only. Consult a physician before use.