I got a bottle it’s been in my refrigerator since last July and hasn’t reached the expiration date but I’ve read it should be tossed out after 28 days? Is there any chance this is still good? I went to cvs because you can get novolin-r without a script but they wanted $130 for the bottle that’s insane!!! Last year I could get it at Walmart for $30-40. Maybe it’s still that cheap there? Anyway sorry for the rant but if anyone can answer any of my questions I really appreciate it