In this study, he told Reuters Health, the pain relief with caffeine was stronger than that from painkillers like acetaminophen (Tylenol) and naproxen (Alee).

• 他告诉路透社健康新闻，这个研究显示，咖啡因的止痛效果强于扑热息痛和甲氧萘丙酸（萘普生钠）等止痛剂。