“Oral vitamin D is a safe and readily available over-the-counter nutritional supplement with anti-inflammatory and immunoprotective properties, while boasting no adverse effects,”
It is possible to overdo Vitamin D. An autoimmune disease was reducing my D level to zero so I was being given 50,000 units a week. Not a problem while the disease was active.
When the disease went into remission the docs told me to take D supplements on my own but they didn’t specify how much. Sometimes I’d take 2,000 units a day, sometimes 5,000.
I’d been taking 5,000 a day before my last blood panel and when the doc got the report she said “What the hell are you doing? Your Vitamin D and Calcium levels are off the chart!” An excessively high level of D causes your blood calcium level to get too high and that can damage your bones and your kidneys. So if you are going to take high doses of D you’d be wise to get your levels tested.
With respect to excess calcium brought about by taking vitamin D3, my suggestion is to search YouTube and the Internet for information about taking vitamin K-2 MK-7 along with your vitamin D3. Some argue that the K-2 MK-7 helps move the excess calcium to your bones. Review what you find with your doctor as I did with mine. I am no MD and have never worked in the medical field, but your doctor should be able to evaluate what you find.
You might also watch Dr John Campbell on YouTube. He is a British PhD Nurse who has trained nurses. Here is a link to one of his daily YouTube videos about Vitamin D3 and read the comments people make about each of his videos:
https://www.youtube.com/watch?v=x5sc7G4s4CY&t=19s
It is called Hypercalcemia and actually leaches calcium out of your bones and deposits it into your bloodstream. I found out the hard way as you apparently did. It is the same material found in rat/mice poison and is the mechanism of their death. My symptom was whole bone pain, a finger bone on my left hand and my right thigh bone. I thought what the hell is going on. The 50,000 unit “hammer” is more destructive than some doctors realize. My personal limit is 4,000 units without ill effects.
Take Vitamin K along with the D3 and K2 together - that regulates the calcium where it should be going (to your bones) instead of where you don't want it (in your arteries and other unwanteds).
Here's a good book on the subject: