mastolab-100Drug Class: Androgen; Anabolic Steroid; Androgen Ester
Main Active Substance: Drostanolone Propionate
Concentration: 100 mg/mL
Presentation: 10 mL Vial
Elimination Half-Life: 1 – 1.5 Days
Recommended Dosage: 100 – 300 mg/week
Anabolic Ratio: 62% of Testosterone
Androgenic Ratio: 25% of Testosterone
Acne: Yes
Hepatotoxicity: No
Aromatization: No
Manufacturer: 7Lab Pharm, Switzerland, Europe


Mastolab-100 is an anabolic steroid that was once created by the luminaries of medicine as a powerful medicine against breast cancer in women. It goes without saying that time does not stand still and after the appearance of aromatase inhibitors (Anastro-lab, Letro-lab, Aromasin-lab), Masteron completely left traditional medicine. But, as is usually the case in sports – what is good for the patient is three times better than a healthy athlete. And Drostanolone immediately took its deserved place in the arsenal of doping drugs.

Being a derivative of dihydrotestosterone, Drostanolone propionate is not capable of conversion to DHT, but in itself exhibits a pronounced androgenic effect. Regarding the anabolic effect, here Mastolab-100 proved to be mediocre and its appointment is rather an extremely slow build of high-quality, lean muscle mass, and not a rapid increase in both body weight and muscle volume, because this drug never causes water retention.

The half-life of Drostanolone propionate is 1 to 2 days. It not only does not aromatize, but also exhibits a tangible antiestrogenic effect (it helps to remove “excess” water from the body). It is also worth noting the ability of Mastolab to dramatically increase efficiency and accelerate regeneration. This steroid reduces the concentration of SHBG (Globulin) increasing the level of free Testosterone and significantly increases the total blood volume.

Despite the fact that this drug was originally created for women – they should avoid taking Mastolab-100 due to the extremely high risk of virilization.

You can buy Mastolab-100 from original manufacturers at the best price in our store. Fast delivery, customer reviews and individual consultations – all the best for you.


  • lean muscle gain;
  • improving the quality of muscles on drying;
  • metabolic acceleration;
  • stamina;
  • accelerated recovery;
  • increased pumping and vascularity;
  • increases power of other steroids taken in parallel.


Mastolab‘s solo course is perfect for beginners who need to quickly lose weight. The main purpose of this steroid is the cutting period. During the period of weight loss and fat burning, you should add Trenolab-A 100, Testolab-P 100, Stanolab-50, Oxano-lab 20. For a dry muscle mass, a stack with: Testosterones, Turano-lab 20, Trenolab-E 200, Oxano-lab, Boldelab-200, Primalab-100.

The duration of courses with Mastolab-100 lies in the region of 4 / 12 – weeks. The dosage corresponds to 100/200 mg every other day or every day (depending on the goals of the athlete).


  • repression of the genital arch and your testosterone;
  • acne;
  • baldness of the head, hair growth in unexpected places, sweating, oily and rough skin, prostate growth;
  • blood clotting and high blood pressure.