Opiates like morphine and codeine are essential for treating severe pain.

像吗啡和待因这样鸦片制剂是抑制剧痛必不少药物。

Opioid drugs can be naturally occurring, such as morphine or codeine, or synthetic, such as fentanyl or methadone.

阿片类药物是天然存，如吗啡待因，是合成，如芬太尼美沙酮。

A few common opiates and opioids include heroin, morphine, codeine, methadone, hydrocodone (known as Vicodin or Lortab) and oxycodone (otherwise known as Percocet) .

一些常见麻醉剂和阿片类药物包括海洛因、吗啡、待因、美沙酮、氢酮（称为维柯丁洛塔布）和羟考酮（称为止痛药）。

Desomorphine, the active ingredient krokodil, is made by dissolving codeine in powerful solvents, and then running it through a bunch of a simple but dangerous reactions to create codeine salts that quickly dissolve in body tissues.

Desomorphine 是鳄鱼地尔活性成分，它是通过将待因溶解强溶剂中制成，然后通过一系列简单但危险反应生成迅速溶解身体组织中待因盐。