葱属植物会有辛辣味，是因为其挥发性油脂中含有氨基酸亚砜这类有机分子。洋葱被切割的时候，会释放出“蒜胺酸酶”酵素，酵素再把氨基酸亚砜转成次磺酸，次磺酸再重组成SPSO这种物质。当眼睛的角膜沾到SPSO后产生的刺痛感，这就是洋葱会让人泪眼汪汪的原因！下面 ...

The pharmacokinetics of promethazine hydrochloride after administration of rectal suppositories at three dosage strengths and oral syrup were studied. The study had an open-label, randomized ...