Toffeecushion don't just assume that what you feel is anxiety. I conned myself in that way as I was a bit anxious having just gone through surgery.
If you look up vitamin D side effects upset stomach, altered taste and appetite are on there.
I suffered shaking and weakness which I now believe was low blood sugar, tingling, sore skin, anxiety, altered taste, loss of appetite, bowels a mess, my hair fell out.
I took 40000iu a week for 4 weeks, my levels shot from 18 to 97 but I felt no benefit at all. My level has already dropped to 61 after 8 weeks.
I have reported what happened to me to the drug company. I have waited 8 weeks since stopping to feel normal again. ALL the symptoms faded in that time including anxiety.
You may be able to tolerate it in another form. I know I can take cod liver oil and be in the sun.
My daughter has tried twice to take it and both times suffered side effects.
The docs are so wrong to say side effects cannot happen.