At this time, the black lemon has gone bad, so it is best not to soak it in water to avoid harm to the body. Don't drink it often, you can buy less, or it will be better to buy fresh lemons temporarily.
Extended data:
Function and efficacy of lemon slices: Lemon contains many nutrients such as sugar, calcium, phosphorus, iron and vitamin B 1, B2, C, etc. In addition, it is rich in citric acid, flavonoids, volatile oil and hesperidin. Citric acid can prevent and eliminate skin pigmentation.
Traditional Chinese medicine in China believes that lemon is warm, bitter and non-toxic. It has the functions of quenching thirst, promoting fluid production, dispelling summer heat, preventing miscarriage, relieving stagnation, invigorating stomach, relieving pain and inducing diuresis, and regulating blood vessel permeability. It is suitable for girls with edema and puffiness.
Smokers should eat more lemons because they need twice as much vitamin C as non-smokers. Lemon is low in calories and has strong contractility, so it is beneficial to reduce fat and is a good medicine for losing weight.
Lemon can prevent cardiovascular arteriosclerosis and reduce blood viscosity. Hot lemon juice and honey are very effective in treating bronchitis and nasopharyngitis. Gandhi moistened lung, sourly quenched thirst, stimulated appetite, detoxified alcohol, whitened skin, moistened skin and lowered cholesterol. The rest of the brewing can be applied to the face to treat facial spots and pinprick.
Reference link: Baidu Encyclopedia-Lemon slices