You’re probably thinking of IUs rather than ug but even then 50k is way too much:
“Doses below 10,000 IU/day are not usually associated with toxicity, whereas doses equal to or above 50,000 IU/day for several weeks or months are frequently associated with toxic side effects including documented hyperglycemia.”
You’re probably thinking of IUs rather than ug but even then 50k is way too much:
https://en.wikipedia.org/wiki/Vitamin_D
50,000ug is 2,000,000 IUs, in other words way too much!