Drostanolone Propionate 100mg/ml
Masteron (Drostanolone Propionate)
Masteron, also known as Drostanolone Propionate or Masteron P, is an injectable anabolic steroid commonly used during cutting phases for muscle definition and a harder, drier look. Drostanolone is a synthetic anabolic-androgenic steroid derived from dihydrotestosterone (DHT) and acts through the androgen receptor.[1]
100mg/ml
10ml
Drostanolone Propionate
Cat Pharmaceuticals
Quick reference
Masteron Dosage
50–100mg
Every other day
100mg
Every other day
100–150mg
Every other day
EOD or 3×
Example: Monday / Wednesday / Friday
Why the frequent schedule? Masteron Propionate is a short ester, so it is normally injected every other day or around three times per week to keep levels consistent.
Duration
Masteron Cycle Length
Typical cutting cycle: 6–10 weeks
The shorter propionate ester makes Masteron P a practical fit for users who prefer a shorter cycle and the ability to adjust the protocol more quickly than with a longer ester.
Primary use
Cutting & Definition
Masteron is primarily chosen for cutting rather than maximum mass gain. Bodybuilders commonly use it when the goal is muscle definition, hardness and maintaining a leaner appearance.
A peer-reviewed review of anabolic-steroid use specifically lists Drostanolone Propionate as an injectable compound used for cutting.[2]
Short-ester Masteron
Why Masteron Propionate Works Well for Cutting
Masteron Propionate is the short-ester form of Drostanolone, which makes it a good fit for 6–10 week cutting cycles and more frequent injection schedules.
Because it is easier to adjust quickly, many experienced users prefer Masteron Propionate when they are tightening up a cycle close to a competition, photoshoot or final cutting phase.
It also stacks naturally with Testosterone, Trenbolone, Anavar and Winstrol when the goal is a harder, leaner look.
Common combinations
Stacking Masteron
Cutting: Testosterone, Winstrol, Anavar, Trenbolone
Bulking: Masteron can be combined with Testosterone, but it is generally not selected as the primary mass-building compound.
After a cycle
PCT After Masteron
Because Masteron Propionate is a short ester, PCT is commonly started a few days after the final injection.
Common starting point: 3–5 days after the final Masteron injection.
Common PCT options include Clomid or Nolvadex. See all PCT products in Thailand →
Independent product testing
Masteron Lab Report
The current Cat Pharmaceuticals Drostanolone Propionate sample was independently tested by OnSet Labs using RP-HPLC-UV.
OnSet Biological Testing Laboratory
26-173271
16 July 2026
NKS0124
Drostanolone Propionate (RP-HPLC-UV)
107.25mg/ml
Specification: NLT 100mg/ml
About Drostanolone Propionate
What Makes Masteron Different?
Drostanolone Propionate is a synthetic anabolic-androgenic steroid derived from DHT. Scientific literature identifies it as an androgen-receptor agonist and notes its historical use under the Masteron name.[1]
The propionate ester is attached to Drostanolone to alter how quickly the injectable compound is released. Esterification is widely used with injectable anabolic steroids to extend activity after an oil-based intramuscular injection.[3]
For bodybuilding clients, the combination of a cutting-focused compound and a shorter ester is what distinguishes this Masteron product from longer-acting alternatives.
Thailand delivery
Ordering Masteron in Thailand
Thai Anabolics provides free shipping within Thailand. Orders are normally shipped within 24 hours, and current stock and price are always shown in the purchase section at the top of this page.
Sources
Masteron Sources
- Borodi G, et al. Exploring the Polymorphism of Drostanolone Propionate. Molecules. 2020;25(6):1436. The paper identifies Drostanolone Propionate (Masteron) as a synthetic anabolic-androgenic steroid derived from dihydrotestosterone and describes its androgen-receptor activity. View full text
- Mullen C, Whalley BJ, Schifano F, Baker JS. Anabolic androgenic steroid abuse in the United Kingdom: An update. British Journal of Pharmacology. 2020. The review lists Drostanolone Propionate as an injectable cutting compound and reports 100mg every two days as a commonly reported non-medical regimen. View study
- Kicman AT. Pharmacology of anabolic steroids. British Journal of Pharmacology. 2008;154(3):502–521. The review explains how esterification of injectable anabolic steroids slows absorption from an oil depot and prolongs delivery. View full text
Written by
Adrian
Adrian writes practical, experience-led content covering anabolic steroids, bodybuilding cycles, performance enhancement and the fitness industry in Thailand. On this page, the focus is Masteron dosage, injection frequency, cutting cycles, stacking, PCT and independent batch testing.
69 reviews for Masteron (100mg/ml)