可待因 Codeine
（重定向自Codeine phosphate）
可待因（Codeine），化学式为C18H21NO3，是一种鸦片类药物（opioid），有止痛、止咳和止泻的药效，它的硫酸盐或磷酸盐常用于药品中。
可待因是一种存在于鸦片中的生物碱，含量约占0.7-2.5%。它可从鸦片中提取，也可用化学方法自吗啡制造。
Codeine phosphate
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英语百科
Codeine 可待因
（重定向自Codeine phosphate）
Codeine, also known as 3-methylmorphine, is an opiate used to treat pain, as a cough medicine, and for diarrhea. It is typically used to treat mild to moderate degrees of pain. Greater benefit may occur when combined with paracetamol (acetaminophen) or aspirin. Evidence does not support its use for cough suppression in children. In Europe it is not recommended as a cough medicine in those under twelve years of age. It is taken by mouth. It typically starts working after half an hour with maximum effect at two hours. Effects last for about four to six hours.
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