Methenolone Enanthate (Primo)

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  The injectable ester of primobolan, a popular secondary addition to a cycle, known for a hard, lean appearance with little water retention. It is seen as a "clean" compound with lower androgenic activity and fewer side effects. its also used partially for it's indirect lowering of estradiol; this is due to 1. resisting aromatization thanks to it's chemical structure, 2. primo seems to occupy estrogen on a lower level, blocking other circulating androgens from using the same receptor. Primo does not directly inhibit aromatization like suicidal aromatase inhibitors like Aromasin.