It is an odorless light blue or blue-green crystal or powder which is easily soluble in water and insoluble in ethanol.

[1][2] The U.S. Institute of Medicine (IOM) sets tolerable upper intake levels (ULs) for vitamins and minerals when evidence is sufficient.

This is one-fifth what the IOM considers a safe upper limit.

Long-term intake at amounts higher than the UL may cause liver damage.

This drug article relating to the gastrointestinal system is a stub.