Who’s the only Irishman who can stay out in the sun all day?
Patio Furniture
I routinely supplement anywhere from 2000 to 5000 IU daily. Had an endocrinologist tell me that most people need the 5000 daily to avoid chronic disease.
Also, let yourself get out into the sun once a day, and do it before you slather on the sunscreen.
COVID-19’s threat is not outdoors. It is indoors.