服用太多的育亨宾（西非一种常青树树皮）会使人致命，不是多数人所追求的那种硬度。

Too much yohimbe, a bark from a West African evergreen tree, can kill you, which is not the kind of stiffness most guys are after.

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使用育亨宾树树皮引起的轻微副作用包括：胃部不适、呕吐、睡眠不规律、高血压、头痛、亢奋、皮疹以及心跳加快。

Minor side effects of taking yohimbe bark include upset stomach, vomiting, irregular sleep patterns, elevated blood pressure, headaches, irritability, skin rashes, and rapid heartbeat.

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