The solubility, stability in gastrointestinal tract, membrane permeability and presystemic metabolism of drugs were the major factors on oral drugabsorption.
药物的溶解性，在胃肠道中的稳定性，膜的通透性和全身代谢是影响口服药物吸收的主要因素。
2
However, another section of the labeling material notes that absorptionof the drug is boosted when ingested with food.
然而，在标签的另一部分写到：当进食时服用药物，能促进药物的吸收。
3
Food, especially fatty foods, slows gastric emptying (and the rate ofdrugabsorption), explaining why some drugs should be taken on an empty stomach when a rapid onset of action is desired.