MG?
Many of us do take a Vitamin D supplement, but 50,000 iu is a lot, unless you have been specifically diagnosed as deficient and are being monitored. A more normal amount would be 2000-3000 iu per day.

The reason for concern is that Vitamin D is fat soluble, and the excess doesn't just get eliminated in your urine, it gets stored in the liver. That can causliver toxicity.
Would you consider reducing the dose to a more moderate level? When I was diagnosed deficient, I used 5000 iu for about 3 months then dropped to 2000 iu when tests showed my level was normal.

Sue