了使人体组织能够更充分地吸收各种维生素，维生素类药一般应在饭后服，而不宜在饭前服。其原因是：维生素!"、!#、$等，口服后主要经小肠吸收，若饭前空腹服，维生素较快通过胃肠，很可能在人体组织未充分吸收利用之前，即排出体外，从而起不到最佳的作用，而饭后服，因肠道有 To make the human body tissue to more fully absorb all kinds of vitamins, vitamins should generally be taken after meals, but not before serving. The reason is: vitamin !,! #, $, Etc., mainly by the small intestine after oral absorption, if fasting before meals, vitamins faster through the gastrointestinal, it is likely that human tissue is not fully absorbed before use, that is, excreted, Which can not play the best role, and after meals, due to the intestine