I have some Biomycin that has not expired yet, but when I drew it out, it is green! I know that oxidation causes color change in meds, but is it ok to still use it? It has not been refrigerated (per label instructions) but the location where I keep it is kind of bright (but not warm). There is nothing floating in it, but around the rim of the container (inside) appear to be solids (in green). I decided to just buy a new container, but wanted to know what any of you would have done.