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

像吗啡和可待因鸦片制剂是抑制剧痛必不可少。

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

阿片类可以是天然存在，例如吗啡可待因，也可以是合成，例如芬太尼美沙酮。

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括海洛因、吗啡、可待因、美沙酮、氢可酮（称为维柯丁洛塔布）和羟考酮（也称为止痛）。

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，它是通过将可待因溶解在强溶剂中制成，然后通过一系列简单但危险反应生成可迅速溶解在身体组织中可待因盐。