SP-Laboratories MASTERON



Package: 1 vial (100mg/ml 10 ml)
Active Substance: Drostanolone Propionate
Product name: Drostanolone Propionate, Drost P, Masteron 100


Masteron, scientifically known as Drostanolone Propionate, is a prominent injectable drug manufactured by SP-Laboratories. It holds a significant position in the world of bodybuilding and sports due to its unique properties and potential benefits. In this article, we will delve into various aspects of Masteron, including its general description, indications, contraindications, applications in bodybuilding and sports, medical actions, potential combinations with other drugs, recommended dosage, and possible side effects.

General Description:

Masteron, or Drostanolone Propionate, is a synthetic anabolic steroid derived from dihydrotestosterone (DHT). It is known for its moderate anabolic and potent androgenic properties, making it a versatile compound for various purposes. The drug is available in injectable form, making it a popular choice among individuals seeking targeted effects.


Initially developed for the treatment of advanced breast cancer in women, Masteron’s therapeutic use has evolved over time. It is no longer widely prescribed for medical purposes due to more advanced treatment options available today. However, its anabolic properties have led to its adoption in bodybuilding and sports.


As with any medication, Masteron has certain contraindications that individuals need to be aware of. It is not recommended for individuals with a history of hypersensitivity to the drug, prostate cancer, or breast cancer. Pregnant or breastfeeding individuals should also avoid using Masteron due to potential risks to the fetus or newborn.

Uses in Bodybuilding and Sport:

Masteron has gained considerable popularity in the bodybuilding and sports communities for its unique set of benefits. It is commonly used during cutting phases to help preserve lean muscle mass while reducing body fat. The drug’s androgenic properties provide a hardening effect on muscles, enhancing their appearance and definition. Athletes also use Masteron to potentially improve performance, strength, and endurance.

Medical Action:

Masteron exerts its effects by binding to androgen receptors in the body. This binding leads to increased protein synthesis and nitrogen retention, contributing to muscle growth and recovery. Its androgenic properties enhance the development of masculine characteristics, such as increased muscle density and reduced body fat.

Combination with Other Drugs:

In bodybuilding and sports, Masteron is often used in combination with other compounds to optimize results. It is frequently stacked with other steroids like testosterone, Trenbolone, or Winstrol. These combinations are believed to create synergistic effects that enhance muscle growth and overall physique.


The recommended dosage of Masteron can vary based on individual goals and experience levels. For beginners, a typical dosage might range from 200 to 300 milligrams per week, administered through injections. More advanced users might increase the dosage to 400 to 600 milligrams per week, considering their tolerance and desired outcomes. However, it’s crucial to consult a medical professional before starting any steroid regimen to ensure safe and effective use.

Side Effects:

While Masteron is considered relatively mild in terms of side effects, users should still be cautious. Possible side effects may include androgenic effects such as acne, increased facial and body hair growth, and deepening of the voice. Female users may experience virilization symptoms. Additionally, like many anabolic steroids, Masteron can affect cholesterol levels and suppress natural testosterone production.


Masteron, or Drostanolone Propionate, is a distinctive injectable drug with a rich history in both medical and performance-enhancing contexts. Its potential benefits for bodybuilding and sports enthusiasts make it a valuable tool in achieving specific physique goals. However, it is crucial to approach the use of Masteron with caution, considering its potential side effects and individual considerations. As with any substance, seeking guidance from medical professionals and adhering to recommended dosages is essential to ensure both safety and effectiveness.