Tramadol:
Tramadol (marketed as the hydrochloride salt by Janssen Pharmaceutica as Ultram, and as generics) is used to treat moderate to moderately severe pain.
en.wikipedia.org
曲马多:
曲马多，英文名： Tramadol （INN），是一种鸦片类药物 ，主要用作镇痛药，可缓解普通到严重的疼痛。
zh.wikipedia.org
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Tramadol曲马多