3 ms·
The human body absorbs 70-90% of Vitamin C taken daily at levels up to 1000mg, at which point absorption falls to 50%, the safe upper limit being 2000mg per day
by AcquirdXpertise 5y ago
The human body absorbs 70-90% of Vitamin C taken daily at levels up to 1000mg, at which point absorption falls to 50%, the safe upper limit being 2000mg per day.
As your own source explains, “High intakes of the vitamin are generally well tolerated; a tolerable upper level was recently set at 2g based on gastrointestinal upset that sometimes accompanies excessive intakes.”
The OP’s reference to 100mg daily was evidently a typo; he probably meant 1000mg rather than 100.
FYI: I’m currently taking 1000mg daily on the advice of my primary care physician.