Keyzer J J, Oosting E, Wolthers B G, Muskiet F A
Pharm Weekbl Sci. 1983 Oct 21;5(5):252-3. doi: 10.1007/BF02332954.
The administration of 200 mg of ZnSO4.7H2O to six normal healthy males gave rise to increased serum zinc levels when this drug was taken in a fasting state, whereas administration during a light meal caused no increased levels.