Reply to thread

Hey hey guys, out of curiosity I was googling questions about Pfizer brand  testosterone multi-dose 10ml vial because I just started getting them. I used to just get the single-use vials  because my insurance stopped covering the single dose vials  except Perrigo which I don't use I had an allergic reaction. Vi now started the multi-dose so I pay out of pocket 

After puncturing the stopper it says 28 days goes by and it's no longer good. How true is this, because doesn't that defeat the purpose of a multi-dose vial? 

Every every Google search said the same thing..am I losing potency with a multi-dose vial? This can't be right help please.