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Botanical illustration of Lemon
CulinarySourced entry

Lemon

Citrus limon

The familiar sour citrus fruit, once used to treat scurvy and long used for colds and sore throats. Lemonade raises urine citrate, which helps prevent some kidney stones.

Safety at a glance

  • PregnancyNothing recorded
  • BreastfeedingNothing recorded
  • MedicinesNothing recorded
  • Who should avoid itNothing recorded
  • AllergiesNothing recorded
  • ToxicityNothing recorded

Tap a box to read the safety notes below. “Nothing recorded” means our sources don't cover it, not that it's safe.

What is Lemon?

Plant family
Rutaceae, the citrus family
Parts used
The fruit juice, peel and essential oil
Where it grows
Asia; now grown in warm regions worldwide
Genus
Citrus
Species
limon

Traditionally used for

  • Food
  • Colds
  • Sore throat (traditional)
  • Kidney stone prevention

Traditionally described as

  • Rich in vitamin C

Traditions that use it

Natural compounds

Safety

Depends on how it's prepared

  • Lemon peel and lemon essential oil contain furanocoumarins, which can make skin burn more easily in sunlight. The limonene in the oil can also irritate the skin or cause allergic reactions.[1]Study

What does the research say?

Traditional use

These are traditional uses, not proven treatments.

  • Lemon juice was used to treat scurvy before vitamin C was discovered. In traditional medicine it's also used for colds, sore throats, fever, rheumatism, high blood pressure, chest pain and irregular periods.[1]Study

Laboratory & animal research

Lab and animal results show what might be worth studying in people. They don't show that the herb has these effects in humans.

  • Lemon is rich in vitamin C and flavonoids such as hesperidin, and its oil is rich in limonene. Lab studies found its extracts and oil fought microbes, calmed inflammation and slowed cancer cells.[1]Study

Research in people

  • Lemonade raises citrate in the urine, which helps prevent calcium kidney stones. In small studies of people who form stones, the effect was weaker and less consistent than with the prescription medicine potassium citrate.[2]Review or trial

In short

Lemon peel and oil can make skin burn more easily in sunlight.

Sources

  1. [1] Citrus limon (Lemon) Phenomenon-A Review of the Chemistry, Pharmacological Properties, Applications in the Modern Pharmaceutical, Food, and Cosmetics Industries, and Biotechnological Studies · DOI: 10.3390/plants9010119Peer-reviewed study
  2. [2] Systematic review of pharmacological, complementary, and alternative therapies for the prevention of calcium oxalate stones · DOI: 10.1016/j.ajur.2024.04.006Review or clinical trial

This information is educational and traditional in nature, and is not a substitute for professional medical advice. Unfamiliar word? See what these words mean.