Coronavirus

[Muddy Retriever]

because taking to much vitamin D can lead to hypercalcaemia, kidney damage/failure, heart damage, weakened bones, nausea, vomiting, poor appetite, stomach pain, constipation, diarrhea...

And because a health professional on this forum also indicated the same.
And because the ONE study that you cited found that it had basically no effect.

There are lots of studies suggesting positive effects of vitamin D on Covid. It’s early so it’s not established fact that this is the case. But vitamin D has positive effects anyway. Perhaps you could direct us all to some studies that suggests taking recommended doses will lead to the problems you have listed.