While Masteron-Propionate is very fast acting and short lived in duration the same cannot be said about the large ester Masteron-Enanthate form and due to this fact one will find the Enanthate version may be injected far less than its Propionate brother. Masteron-Propionate must necessarily be injected every other day but the Enanthate form is well-suited at a mere two injections per week. This is perhaps the only real distinct advantage of the Enanthate form over the Propionate form, one can inject far less frequently; however, it may not be as much of an advantage as you think. As Masteron is for all intense purposes a steroid that will generally be used while cutting, especially at the end of a contest bodybuilding cycle , most individuals will be using other short ester based anabolics and injecting on an everyday to every other day basis to begin with. If this is the case you’re better off simply going with Masteron-Propionate as it is generally a purer substance; Masteron-Enanthate in itself is not the problem but many of the labs who make it seem to have a hard time with it.
For the standard bodybuilding dose most will run approximately 300-400mg per week of the compound with 600mg per week generally being considered a high-end dose and about as high as you’ll ever need to go and most will never need to go this high. You could run less than 300mg but 200mg per week would be the minimum to see any results and in most people 200mg won’t provide that much of a bump. Most bodybuilders and gym rats will find Masteron-Enanthate to be a welcomed addition to a stack when dieting and in most cases the final 6-8 weeks of the cycle.
Like other AAS, drostanolone is an agonist of the androgen receptor (AR).  It is not a substrate for 5α-reductase and is a poor substrate for 3α-hydroxysteroid dehydrogenase (3α-HSD), and therefore shows a high ratio of anabolic to androgenic activity.  As a DHT derivative, drostanolone is not a substrate for aromatase and hence cannot be aromatized into estrogenic metabolites .  While no data are available on the progestogenic activity of drostanolone, it is thought to have low or no such activity similarly to other DHT derivatives.  Since the drug is not 17α-alkylated , it is not known to cause hepatotoxicity . 
Because the ultimate goal of a steroid cycle is to increase strength and muscle size, the associated spike in estrogen which accompanies steroids such as Testosterone is considered undesirable. In order to disassociate the two effects, two classes of drug are used. Medications such as Nolvadex or Clomid target the estrogen receptors. They make it more difficult for the estrogen to exert it’s influence within the body thus allowing the testosterone to act more freely. The second class is aromatase inhibitors such as Femara. They target the aromatase enzyme itself in order to prevent the production of estrogen in the first place. Sometimes, it’s not always clear which option you should go with or even what the differences are between the two. Lets clear that up a little.