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Third-Party Testing Results
Every batch is independently tested by Janoshik for quality and transparency.
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VERIFIED
This batch has passed all tests.
High purity and accurate concentration.
Purity
High Purity
Identity
Confirmed
Concentration
Accurate
Compounds
No Harmful Additives
Product Information
Drostanolone propionate, commonly known as Masteron, is a synthetic anabolic-androgenic steroid derived from dihydrotestosterone (DHT). It is a short-acting injectable compound historically associated with bodybuilding and physique competition.
Active Compound
Drostanolone Propionate
Concentration
100 mg/mL
Volume
10 mL
Oil Compound
MCT OIL
Solvents
12% BB / 2% BA
Storage
Store at 15–26°C. Protect from light.
Manufacturer
Biogenix Pharma
Active-Life
2-3 Days
Product Overview
Physiological Effects
Drostanolone interacts with androgen receptors and may affect muscle retention, body composition, and androgen-dependent tissues. Claims of increased muscle hardness or improved physique definition are not guarantees of outcome and are influenced by multiple factors.
Because drostanolone is a DHT derivative, potential androgen-related effects include acne, accelerated hair loss in susceptible individuals, and prostate-related complications.
Estrogen and Hormonal Considerations
Drostanolone does not aromatize into estrogen. However, this does not mean it prevents estrogen-related effects from other compounds or safely regulates estrogen levels throughout the body.
Exogenous anabolic steroids can disrupt normal endocrine function, including testosterone production and fertility.
Shipping
We ship discreetly across Canada using tracked shipping.
- $25 standard shipping across Canada
- Free shipping on orders over $499
- Orders processed within 1–2 business days
- Tracking number provided via email
FAQ
At 300 mg/mL, more active ingredient is dissolved than the carrier oil would normally hold at equilibrium. When temperatures drop below 20°C, solubility decreases and excess Equipoise precipitates as needle-shaped crystals (FDA NDA 216318, 2023).
If a vial appears cloudy or contains visible crystals, warming it can redissolve the testosterone. A widely practiced method:
- Place the vial in a sealed plastic bag to keep water away from the rubber stopper.
- Submerge in warm water (100°F to 110°F) for at least 15 minutes.
- Swirl gently. Don’t shake aggressively.
- Keep submerged until the solution is completely clear.
Unopened vials typically carry a manufacturer-assigned shelf life of 24 to 36 months when stored properly. After expiration, potency may decline enough to affect treatment outcomes, and using expired medication is a decision best discussed with the prescribing provider. If routine blood work shows unexpectedly low levels, an expired or improperly stored vial is one variable to rule out.
Once punctured, the CDC’s Injection Safety guidelines recommend discarding multi-dose vials after 28 days regardless of remaining volume (CDC, 2024). Clients should write the date of first puncture directly on the label.
UV light can drive oxidation and hydrolysis in testosterone cypionate, both of which reduce active hormone concentration without obvious early visual changes.
Oxidation occurs when UV energy causes the A-ring of the steroid molecule to react with dissolved oxygen. Pharmaceutical stability testing has shown that UV exposure can degrade steroid potency in clear glass containers within weeks. Visible signs include the oil turning from pale amber to dark brown or greenish. Hydrolysis breaks the ester bond linking the cypionate chain to the testosterone molecule.
