Lemon is known to have been used by the Romans as a treatment for stomach upsets and also as a breath freshener.The British Navy have also used it in the past to aid the prevention of scurvy.

• 柠檬曾被罗马人用来治疗消化不良和用作空气清新剂，过去英国海军曾用柠檬预防坏血病。