Drosta P 100 by Core Labs

• Trade Names: Masteron

  Chemical Names: Drostanolone

  Routes: Intramuscular Injection

  Half-life: Propionate: 2-3 days / Enanthate: 8-10 days

  Know under: Masteron, dromostanolone, Drolban, Masteril, drostapex, drostin

 
Drosta P 100 (Core Labs)

Drosta P 100 is an injectable anabolic-androgenic steroid (AAS) produced by Core Labs, containing Drostanolone Propionate , more commonly known as Masteron. It is highly regarded in the bodybuilding community for its potent androgenic properties and its ability to provide a "hard," dry look to the physique during cutting cycles.

Product Specifications

• Manufacturer: Core Labs
• Active Ingredient: Drostanolone Propionate
• Ester: Propionate (short-acting)
• Concentration: 100 mg/ml
• Chemical Classification: DHT (Dihydrotestosterone) derivative

Pharmacological Profile

Drostanolone is a 2α2α-methylated derivative of dihydrotestosterone. This structural modification renders the molecule resistant to metabolism by the 3α3α-hydroxysteroid dehydrogenase enzyme, which is present in skeletal muscle tissue.

• Anti-Estrogenic Properties: One of the most unique features of Drostanolone is its mild anti-estrogenic activity. It does not aromatize into estrogen and may act as an aromatase inhibitor in the body, which helps mitigate water retention and estrogen-related side effects.
• Short-Acting Kinetics: The propionate ester results in a rapid release of the hormone into the bloodstream. This necessitates frequent injections—typically every other day or daily—to maintain stable serum levels.
• Anabolic/Androgenic Ratio: While its anabolic rating is modest compared to other compounds, its high androgenic strength makes it excellent for maintaining muscle mass in a caloric deficit while enhancing muscle hardness and vascularity.

Primary Benefits

• Physique Hardening: It is primarily utilized in the final weeks of contest preparation to strip away subcutaneous water and reveal muscle definition.
• Strength Maintenance: Despite being a "cutting" steroid, it helps athletes retain strength and muscle density while on restricted-calorie diets.
• Lack of Water Retention: Since it does not cause estrogenic water retention, it is a preferred agent for athletes who need to remain within specific weight classes or desire a lean aesthetic.

Potential Side Effects

• Androgenic Activity: As a derivative of DHT, it is prone to causing classic androgenic side effects, including acne, oily skin, and accelerated hair loss in those genetically predisposed to pattern baldness.
• Cardiovascular Strain: Like many AAS, it can negatively influence lipid profiles, specifically by reducing HDL (good cholesterol) and increasing LDL (bad cholesterol).
• Hormonal Suppression: Drostanolone is suppressive to natural endogenous testosterone production, requiring proper post-cycle therapy (PCT) upon discontinuation.
• Injection-Site Sensitivity: Due to the propionate ester and the concentration, some users may experience temporary post-injection pain (PIP) at the site of administration.