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  /    /  Injectable Steroids  /  MAST P 100MG



Brand: Spectrum Pharma
Active Substance: Drostanolone Propionate
Package: 1 Vial 100MG
Shelf life: 2023
Manufacturer country: Europe
Category: Injectable

SKU: 5074 Category:


Side effects

Side effects of Mast P.

For obvious reasons, androgenic side effects are considered the most probable and in fact the only ones. It can be acne, increased aggression, body and face hair, baldness, coarsening of the voice, impaired libido or testicular atrophy. Local reactions to injections, such as redness and pain at the injection site, are not excluded, but complaints about them are almost never encountered.

Mast P (Spectrum-Pharma) cannot be called the most powerful anabolic or androgenic steroid, but it usually does an excellent job with the tasks, whether it is muscle cutting or the development of strength potential. This is confirmed by the reviews, which are available in large numbers and freely available on the Internet.


It is a very valuable anabolic steroid, but you should have a good understanding of why you are using it, what its benefits are, what you can achieve by using it. Mandatory PCT after the course of Masteron Spectrum!

Packaging:vial (10 ml)

Active ingredient concentration:100 mg / ml

Active ingredient:drostanolone propionate


Keep:in a dark and dry place, at a temperature of no more than 25-27 degrees °C

Mast P – It is an androgenic steroid, a working drug that is being used effectively in bodybuilding. It is distinguished not only by its strong effect, but also by its fast action. In iron sports, it is primarily used as the basis for strength training or cutting cycles, as well as a component of mass gaining cycles (mainly during the exit).


Active substance, – drostanolone propionate, is a derivative of dihydrotestosterone, which determines many of the pharmacological qualities of the drug. Its Steroid Profile: Anabolic Activity – moderate, androgenic activity – high; half-life – from 1 to 2 days, detection time – at least 14 days; aromatization – no, absent; progestogenic activity – no, absent; hepatotoxicity – no, absent; decreased testosterone synthesis – yes, strong.

For athletes, the effects of Mast P are of the greatest importance, such as high-quality muscle growth, burning subcutaneous fat, removing excess fluid, increasing muscle density, improving muscle relief. The drug not only does not have estrogenic activity, but can even exhibit anti-estrogenic qualities, which is especially useful in cutting cycles, as well as in strength and mass-gaining cycles, when they include aromatizing AAS.



Doses. The effective dosage of the drug is selected on an individual basis. The dosage range may be influenced by factors of gender, age, tolerance to the active ingredient and experience with sports pharmacology. If you give the average values, then for athletes it is 100 mg (which is equivalent to 1 ml) every 2 days. Drostanolone propionate is not recommended for athletes because of its high androgenic activity, which can provoke virilization (symptoms: from increased aggression to body and face hair growth).

Duration of the cycle. Mast P does not need to be applied for long periods of time to obtain optimal results. In most cases, 4-8 whole weeks are sufficient. And the drug is usually not used longer because of the risk of increased side effects. To achieve quality progress, it is better not to abuse it, but to combine drostanolone propionate with other steroids, various hormones or peptides. Example:

Mast P cycle + testosterone propionate (SP Propionate or equivalent) + oxandrolone tablets (Anavarged 10mg or equivalent) – for cutting, experienced amateurs and sports professionals.

It is important to remember here that the rule “the bigger, the better” does not apply to sports pharmacology. The athlete must know when to stop!

Reviews. From domestic athletes, Mast P (Spectrum-Pharma) often receives laudatory marks, which note that it has a positive cost-performance ratio. In other words, the drug usually pays for itself with interest, contributing to the development of results, rather than side effects. In general, the brand’s products are in good standing with our customers.

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