Okay, so this is news to me, but Im new to hcg. Once it's mixed with the bac water it has to be refrigerated? Damn glad to know since mines about a day away from delivery. If refrigerated, how long should it typically last. Is there a need to refridgerate sust250, deca, tamox, clomid or aromasin? If it doesnt matter, does it hurt them to go ahead and refridge them anyways?