I have a half used 10ml bottle of sustanon that has been sitting for a year. I think I switched from it to something else so there was some left over. I don't see any particles or anything in it, but I probably couldn't see bacteria if it was in it. Doesn't the benzyl alcohol and benzyl benzoate keep it clean? I know every time you puncture it, you're letting air in.
Is it still good? Or would I get an infection if I used it?
Is it still good? Or would I get an infection if I used it?