The accepted daily dose is 2,000 units per day.
Always check with your doctor when starting vitamin and minerals since they know your health history.
1000 units per day is half of the daily dose....This amount is not cause an issue with accumulation. The benefits are greater.
Those overdosing, according to medical records, were from parents overdosing their children, Seniors taking mroe than needed and adults knowinly taking doses of 100,000 per day.
A study was conducted of pregnant women where they does them with 100,000 units per day during their entire pregnancy with no ill effects on the mother or child.
D in TX