myostatin compounds in no way would i trust that they even exist where a person could just buy them online. i am curious where you bought it from. even if such a thing existed i would not recommend you take them. growing parts of the body is a gamble. one study had females use them and their thighs grew larger. it isn't something that you can wish what part to use
as far as your question, i have no clue bro. i really don't