I just found this discussion. Last year I had two bottles randomly go cloudy. I turned them in to my doctor’s office who was going to turn them over to the rep, but I never received a report back. I didn’t think anymore about it since the doctor’s office replaced the vials with new sample vials for me. UNTIL today, when I pulled my kit out of my purse and the vial I started, only a week ago, has now gone cloudy. @Jess1220 Jess, did you get any info back from Lilly?