Drostanolone Propionate (Masteron) 100 mg

Drostanolone Propionate (Masteron) 100 mg is Hilma Biocare's short-ester drostanolone injectable, supplied as a 10 ml vial at 100 mg/ml. The propionate ester releases and clears within days, giving tight control over a compound that does not aromatise and is associated with a dry, hardened appearance.

What Drostanolone Propionate Is

Drostanolone propionate is the classic Masteron presentation: a DHT-derived androgen esterified with propionic acid at the 17-beta hydroxyl. The propionate chain is short, so the depot is small and the release window is measured in days rather than weeks. Because drostanolone is already a reduced metabolite of testosterone, it is not aromatised and does not produce oestrogenic side effects such as water retention. That profile is why it is studied almost exclusively in conditioning and hardening contexts.

The History of Masteron Propionate

Drostanolone was first synthesised in the late 1950s and marketed in the 1960s as Masteril and Drolban for breast cancer. The propionate ester was the original clinical form, administered by intramuscular injection. In physique research it became one of the signature pre-contest compounds of the 1970s and 1980s, valued for the dry look it produced when body fat was already low. Its reputation has outlasted its clinical use, and masteron propionate 100 remains one of the most recognised short-ester injectables.

How It Works

After injection, tissue esterases cleave the propionate group and release free drostanolone over approximately two to three days. The compound binds the androgen receptor, promotes protein synthesis in skeletal muscle and does not undergo aromatisation because its A-ring is already reduced. Hepatic metabolism and renal excretion clear the parent compound and its metabolites. The short ester means blood levels rise quickly and fall quickly, which is useful when a researcher wants to stop and clear without a long tail.

What the Research Shows

• Drostanolone was studied clinically in the 1960s and 1970s as treatment for advanced breast cancer.
• Its binding to the androgen receptor and lack of aromatisation are well documented in steroid pharmacology.
• Propionate esters are established as fast-release prodrugs with short half-lives relative to enanthate.
• Research on body-composition effects is largely observational and extrapolated from related androgens.

Research Context

Drostanolone's androgenic character is central to its research profile. Because it is a reduced androgen, it binds the androgen receptor strongly and is associated with effects on sebaceous glands and hair follicles, which is why skin and hair are recurring endpoints in the literature. The propionate ester produces a short, sharp exposure that is useful for studying acute androgen-receptor effects. Comparative studies show that it does not aromatise and therefore does not raise oestradiol, distinguishing it from testosterone-based compounds.

Strength, Pack and Authentication

The vial contains 100 mg of drostanolone propionate per millilitre, or 1000 mg per 10 ml. It is filled under controlled conditions, sealed with a colour-coded flip-off cap and packed in a printed carton that lists the compound, strength, volume and intramuscular-use marking. A scratch-off code inside the box can be checked against the manufacturer's records.

Buying Masteron Propionate Online

Masteron propionate is a staple search term in short-ester research. If you are researching drostanolone propionate, comparing masteron 100 products or looking to buy masteron propionate online from a trusted Hilma Biocare supplier, this page gives you the full specification, pack size, price and live stock status. Browse more Hilma Biocare injectables at NotNatty.