lock

So I've seen a video recently of someone saying there experience taking adderall when they don't have ADHD and was saying how it makes them lock in getting stuff done. Got me wondering now weather or not there is any sort of peptide or drug that does this? Like specifically makes you "lock...

Anyone know where I can get some 1ml syringes with a luer lock tip ? Literally all I’m coming across is “out of stock” or “slip tip”. I only need the barrel, no needle