In the normal state, blood has no business anywhere except in the confines of the heart and blood vessels and in the sinusoids of the marrow, liver, and spleen. Of the average 5 L of blood, only 2.25 L, or 45%, consists of cells.
Take-away: Calcium and magnesium may best be taken in the evening with food or before nighttime sleep. Since zinc should not be taken with calcium and apart from iron, it is most useful if taken earlier in the day either slightly before/after food. Iron should ideally be taken on an empty stomach and separately from other multivitamin/multimineral combinations.
The current recommended dietary allowance for zinc taken by mouth is: 11 milligrams for males 19 years old and older; 8 milligrams for females 19 years and older; 11 milligrams for pregnant females 19 years old and older; and 12 milligrams for lactating females 19 years and older.or infection, the following doses of zinc have been taken by mouth: 30-50 milligrams of zinc five times per week for 12 months for Schistosoma mansoni infection; 20 milligrams of zinc daily with or without 20 milligrams of iron five days per week for one year for episodes of infectious disease.