subject: Improper Vitamin Supplement May Cause Poisoning [print this page] What's more, vitamins should be supplemented after meals. Experts point out that, if the water-soluble vitamins such as folic acid, vitamin B and C are taken with an empty stomach before meals, they will quickly enter into the small intestine through the stomach and be absorbed. As a result, before they are completely utilized by the body, part of them has been excreted out of the body with the urination. In addition, for some fat-soluble vitamins such as vitamin A, D, E, K, only when they are dissolved in the fat foods, can they be absorbed by the body. If taken with an empty stomach, most of the fat-soluble vitamins can't be dissolved, which will make them can not be absorbed by the body.
