Primobolan is an enanthate esterified injectable steroid which shows mild anabolic and low androgenic properties. The enanthate ester creates a situation in which concentrations of the steroid rises and stays elevated for roughly two weeks. Primobolan is the injectable version of methenolone, the same compound available in oral form created by Schering. The injectable version is much more popular, being much more cost effective to males bodybuilders whom require a relatively high dose.
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