Sustanon 250 is composed of four different estered testosterones. It was developed for hormone replacement therapy in male but now body builders and athlete use it to improve their efficiency and performance. Sustanon works similar to other forms of testosterone. It tells the muscle cells to accumulate contractile protein thus making them grow in mass. Besides this, it increases the number of muscles fibre and count of Red Blood Cells. Hence, more number of RBCs supply sufficient amount of oxygen helping in quick recovery from fatigue. It also supports synthesis of glycogen. Sustanon also exhibits side effect similar to that of testosterone that occurs because of its conversion to estrogen female hormone.
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