Masteron (dromostanolone propionate, also known as drostanolone propionate) after a long period of time as a rare drug is now enjoying greater popularity, and deservedly so.
Where one does not wish to use a large amount of injectable testosterone and wishes to use either no trenbolone or only a modest amount of that drug, Masteron is often an ideal choice for inclusion in a steroid stack, or in some cases for use as the sole injectable for a steroid cycle.
Masteron undergoes no aromatization (conversion to estrogen), no conversion to DHT or potentiation by the 5-AR enzyme, and as an unalkylated steroid it poses no liver issues. In these regards and also in overall side effects, Masteron is best compared with Primobolan Depot.
In terms of positive effects in an anabolic steroid cycle, Masteron is at least as effective as Primobolan per milligram for mass gain and for fat loss, and appears better for hardening.
Masteron can be used as the sole injectable: in this case, I prefer to see dosing of 500-700 mg/week. A Masteron/Dianabol stack is more effective however, as is a Masteron/Anadrol stack. Testosterone also combines well with Masteron.
Another use of Masteron which has become more common lately is combination with trenbolone. Unlike combination with Dianabol or Anadrol, there is only an additive effect, not a synergistic effect. However, including Masteron allows a lower trenbolone dosage while achieving very similar or equal physique benefit with less potential for trenbolone-specific side effects of night-sweats, increased tendency to aggression, and/or insomnia.
Masteron also is useful in combination with testosterone for self-prescribed hormone-replacement therapy (HRT.) For example, 100 mg/week each of Masteron and testosterone can be superior for physique benefits to 200 mg/week testosterone alone, while being milder in side effects due to lower resulting levels of estradiol (estrogen) and DHT.