I understand. It's not easy to get such an appointment here and it may take months, certainly a few weeks. I can do that.

But do you think that I'm allergic to D3/cholecalciferol itself? I'm not ruling that out for sure, but considering my allergic reactions or responses to the two forms, lanolin and lichen, were different, I thought it more likely that my allergies is to lichen and lanolin, so the sources not the chemical cholecalciferol. But, of course, there's no way to know for sure, and there are other explanations that could bring me back to it actually being the cholecalciferol.