We shouldn't be telling people to overdose on Vitamin D, obviously. I dread the day that Donald Trump mentions "Vitamin D", but then again even a massive overdose of Vitamin D isn't going to be life-threatening.
The generally safe amount is 4000 IU daily, which should get almost everybody to healthy levels. However, if your doctor finds that you have low levels, he may prescribe far higher amounts for a while.
Then do not overdose. Tell people to take 1000IE per day, not more. This will have no negative impact on the health or economy, but if we are lucky, it will help reduce the impact of COVID-19.
Shutting down the economy is clearly dangerous, yet enough people do not seem to have a problem with that.
Vitamin D pills is just a quick fix. Moderate exercise and fresh air would probably save more lives. Healthy vitamin levels are good, but its many little things which affects health.
The generally safe amount is 4000 IU daily, which should get almost everybody to healthy levels. However, if your doctor finds that you have low levels, he may prescribe far higher amounts for a while.