Saline

Saline, also known as saline solution, is a mixture of sodium chloride in water and has a number of uses in medicine.

Applied to the affected area it is used to clean wounds, help remove contact lenses, and help with dry eyes.

By injection into a vein it is used to treat dehydration such as from gastroenteritis and diabetic ketoacidosis.

It is also used to dilute other medications to be given by injection.