Mastebolin is a very androgenic injectable anabolic steroid which allows to acquire a very dense musculature. This product is used to dry the muscles at the end of the course of steroids.


Type: Injection

Pack: 10 amps of 1ml (100mg/ml)

Substance : drostanolone propionate

Manufacturer: Alpha Pharma

Mastebolin is an anabolic steroid composed of a fast ester of drostanolone, drostanolone propionate.

It is an injectable steroid derived from dihydrostestosterone (DHT). Products based on this substance are called Masterone in the world of bodybuilding and bodybuilding.

It is therefore a very androgenic anabolic product. Manufactured by Alpha Pharma laboratories, Masterone also exists in a 10ml vial and also in a delayed-effect version in a 10ml vial

As Mastebolin is a derivative of dihydrotestosterone, it provides the user with a high level of male hormones. This results in a virilization effect including dense and lasting musculature with little water and sodium retention, but without significant mass gain. This is why this product is used during drying cycles, often stacked with other "drying" steroids to accentuate this effect.

This is how Mastebolin becomes very effective in achieving a skinned look.

However, it should be noted that if Mastebolin provides a dense musculature to the user, it does not reduce fat retention and it is already necessary that it has a low level of fat in the body to obtain a truly striated musculature.

Mastebolin can also improve the quality of muscle mass gained during a mass cycle when combined with other more anabolic products such as testosterone.

On the other hand, it is a steroid very appreciated by competitors because it quickly disappears from the body without leaving traces so that it is possible to follow a treatment with Mastebolin up to 10 or 12 days before a competition without this being detected during a check.

Mastebolin being very androgenic, it is inevitable that it causes various virilizing phenomena.

The main phenomena associated with its use are acne and baldness.

Baldness can be prevented and combated by the use of a specific treatment shampoo with Nizoral.

The risk of these symptoms appearing depends of course, as is the case with all anabolics, on the importance of the dose and the duration of use of the product.

This is why Mastebolin is generally used in moderate doses and for a period not exceeding a few weeks.

On the other hand Mastebolin does not cause water and sodium retention and there is no risk of hypertension with this product.
In addition, its action is not only androgenic: it is also anti-estrogenic and this therefore excludes the risk of gynecomastia.

As Mastebolin is a product that stays in the body for a very short time, it is usually injected every 2 days at 100mg for men.
For women, the 100 mg injection is usually done every 4 days.

Drying stack: Mastebolin + Winstrol, Primobolan or Oxandrolone.
Dense mass stack: Mastebolin + testosterone propionate.

Technical data sheet: Mastebolin.
Molecule: drostanolone propionate.
Route: injection.
Category: androgen.
Positive effects: dense musculature.
Negative effects: acne, baldness.
Dose: 100 mg/2 days for men.
100 mg/4 days for women.
Strength : **
Mass : *
Danger : ***


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