Anabolic steroids differ in their characteristics, which means there are steroids that are only suitable for specific uses. For instance, Trenbolone is not recommended for bulking but it is an outstanding fat burner. This makes it perfect for a lean mass cycle or a cutting cycle. Always take the side effects of a particular compound into consideration whenever you plan a stack. Do not combine anabolic steroids that show similar side effects. For example, never combine Anapolon and Dianabol because they are already quite toxic and if you combine them, the toxicity will increase exponentially and cause serious damage to your body.
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 . 
EQ is created by chemically bonding the Boldenone hormone structure to a undecylenate ester, making the Boldenone into a raw material like syrup. The oily Boldenone Undecylenate can be mixed with sterile oil or a solvent like benzyl alcohol. This creates an oil based suspension that is then injectable directly into the muscle. EQ is versatile enough to be used for both bulking and cutting cycles. With cutting the EQ is stacked with Winstrol and Trenbolone and during bulking is stacked with testosterone and Dianabol (Enanthate or Cypionate). It is recommended that you use cycle aids during an EQ run, both N2Guard and Cardarine. Additionally, Arimidex or Aromasin, both Aromatase inhibitors, are necessary with Boldenone Undecylenate. Either, but not both Arimidex or Aromasin.