Biochem requires biochem 400 to use the items.
I didnt say it was a bug or a glitch dude read, it gives 585 to any stat you decide to make. do you not understand how much of a buff that is? Clearly you dont because you dont.
And its permanent, this is a balance thing, not a bug or a glitch report.
You can make the items and drop Biochem. I did and still use my stim, adrenal and medpac