Very well known under the trade name Primobolan. Primobolan is one of the few anabolic steroids, which was developed and is still manufactured by the German company. Schering AG, Berlin introduced early sixties Primobolan in the form of various active substances. One group includes the above metenolonacetát and second metenolonenantát (see Primobolan Depot). As acetate was until recently available in injections and tablets of different strengths. Above injectable Primobolan consisting ampoule with an oily solution and 20 mg metenolonacetátu, causing great pain during the application. Furthermore, from the German market vanished 5 mg tablets, so currently remained in the menu only 25mg version. Also very popular 50 mg Primobolan, available only in France, from June 1993 has not on the market. Primobolan is almost pure anabolic with only slight androgenic component. Although the relationship between anabolic and androgenic effect very favorable anabolic effect can be assessed as very strong. Primobolan acetate form is 17-alpha-alkylated and, in the first stage of the processing destroys the liver and inactivate the greater part of the active substance, so that only a very small amount reaches the bloodstream. Primobolan acetate form stimulates the fat burning process, but most of the active substance inactivated in liver metabolism. Primobolan tablets are 17-alpha-alkylated, but contains 17-beta-hydroxy group, are relatively harmless to the liver. At high doses, however, can affect the liver parenchyma, resulting in an increase in bilirubin, alanine aminotransferase, aspartate - aminotransferase and alkaline phosphatase. Primobolan does not cause significant side effects, it is not flavored, does not cause water retention, not 17-alpha-alkylated androgen and has only very weakly. Blood pressure, liver values, cholesterol, HDL and LDL values ​​remain mostly in the standard. Primobolan tablets often play the role of "starting drug " and the barely registerable side effects encourages many steroid users to fast transfer of "harder stuff " as dianabol, testosterone and anabolic steroid Oxymetholon 50. Since Primobolan is a derivative of dihydrotestosterone, may in certain genetic ability to produce excessive hair loss.

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