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.
Stanozolol is the generic name of stanozolol in English , German , French , and Japanese and its INN , USAN , USP , BAN , DCF , and JAN , while stanozololum is its name in Latin , stanozololo is its name in Italian and its DCIT , and estanozolol is its name in Spanish .    Androstanazole , stanazol , stanazolol , and estanazolol are unofficial synonyms of stanozolol.   The drug is also known generically by its former developmental code names NSC-43193 and WIN-14833 . 
Rest assured, gentlemen! Serious and irreversible diseases, especially for the liver, are very rare among people who use injectable Winstrol . This is its first advantage over oral intake. Everything is a matter of correct dosages and respecting the prescribed cycle. You should also note that injectable Winstrol remains hepatotoxic because it is an Alpha-Alkyl-17 (the only injectable of this kind). You must also protect your liver with Samarin 140 or Legalon . Additionally, like all anabolic steroids , it still can cause side effects to your hair, especially for people who are predisposed for baldness.