The homeland of the lemon is Southeast Asia. In Europe, this citrus arrived with the soldiers of Alexander the Great. They brought this citrus fruit from India, so for a while lemons were called "Indian apples". Originally, lemon trees were used only as ornamental plants, but later, in the 11th century, they were cultivated and used for food, much later.
Everyone knows about the ability of a lemon to prevent any cold, so tea with lemon is almost the best cure anyone can take at the first sign of a cold. It is believed that lemon is one of the main sources of vitamin C, however, the useful substances contained in lemons make up a rather impressive list. They include pectin, and folic acid, citrine, and magnesium, as well as many others. Dried lemon is especially good in combination with red tea and in herbal preparations.