Mastavex-E® 200

Name: Mastavex-E® 200
SKU: 1843
Availability: InStock

$70.00

Mastavex-E 200 is an injectable Masteron Enanthate preparation at 200 mg/mL, offering the wellregarded physique-enhancing benefits of Drostanolone (Masteron) with a long-acting ester. Originally known as a short-ester (propionate) compound for treating breast cancer and later adopted by athletes, Masteron is a DHT-derived steroid celebrated for its strong androgenic effect and anti-estrogenic properties, which yield a notable increase in muscle hardness and density. Mastavex-E 200 allows for these effects to be sustained with fewer injections (typically twice weekly) due to the enanthate ester’s ~7-10 day half-life. In a cycle, Mastavex-E helps to reduce subcutaneous water retention and can inhibit aromatase activity, thereby sharpening muscle definition and amplifying the look of dryness and vascularity. It has a moderate anabolic effect, so while it can aid muscle maintenance and modest growth, it is most often used alongside other anabolics rather than as a primary mass builder. Athletes commonly include Mastavex-E in cutting or pre-contest stacks to capitalize on its ability to produce a “chiseled” appearance. It’s also used in lean bulking cycles to keep gains quality and mitigate estrogenrelated side effects from other aromatizing steroids. At 200 mg/mL, Mastavex-E offers a convenient high concentration of this compound, making it easier to reach effective doses. The end result of incorporating Mastavex-E 200 is a harder, drier, and more aesthetically refined muscular physique.

Category: Injectables

Description
Reviews (0)

Chemical Name: Masteron Enanthate (Drostanolone Enanthate)
Chemical Structure: Structural formula image placeholder
Molecular Formula: C₂₇H₄₄O₃
CAS Number: N/A (experimental compound)

Key Benifits:

Dramatically improves muscle hardness and density, contributing to a dry, grainy look
Anti-estrogenic action: helps reduce estrogen-related side effects by competing with aromatase, lowering water retention and risk of gynecomastia
Enhances strength and power without significant weight gain, ideal for athletes needing performance and speed
Long-ester format provides stable blood levels and convenient injection schedule (less frequent than propionate version)
Supports fat loss and a more vascular appearance due to its DHT-derived properties which can promote lipolysis

Known For:

Mastavex-E 200 (Masteron Enanthate) is known as a premier “finishing” steroid. It’s famously used in the final stages of contest prep or photoshoot training to maximize muscle definition and bring out the coveted dry, hard look. Additionally, it’s recognized for its synergy in stacks – Masteron often amplifies the effectiveness of other steroids by keeping estrogen in check and adding an extra androgenic kick for strength and shape.

Synergistic Stacking:

Test-Depot® 250 – Testosterone Enanthate forms the base of most cycles; with Mastavex-E, it creates a balanced stack where Masteron enhances the quality of the gains and mitigates estrogenic side effects of testosterone
Trenavex-E® 200 – Trenbolone Enanthate and Masteron Enanthate are a classic contest combination, delivering extreme hardness, strength, and fat loss synergy (with Masteron further sharpening tren’s powerful results)
Primovera-E® 100 – Primobolan Enanthate stacks with Mastavex-E for an ultra-clean cutting or lean mass cycle; together they improve muscle retention and hardness without significant side effects, ideal for those focusing on aesthetics

Why Choose Blckline:

Blckline Pharma Group stands for uncompromising quality in performance enhancement. All our injectable products are formulated with pharmaceutical-grade ingredients and produced under strict sterile conditions. Each batch is lab-tested to ensure purity, potency, and adherence to label claims. By choosing Blckline, athletes and health enthusiasts receive products they can trust for safety, consistency, and superior results.

Ingredients / Label Composition:

Each mL of Mastavex-E 200 contains 200 mg of Drostanolone Enanthate (USP) as the active ingredient. Inactive ingredients include benzyl benzoate, benzyl alcohol, and grapeseed oil as the sterile carrier solution.