There are 100ml/bottle of physiological saline, the price of which is 5 yuan, and 250ml/bottle, the price is also 5 yuan, the price is actually not much different. This drug is mainly used for a variety of causes of water loss, because it is basically equal to the plasma osmolarity, so it can be used to treat some hypotonic isotonic, or hypertonic water loss, but also for the treatment of hyperosmolar non-ketotic diabetic coma. In addition, this drug can also be used externally, it can be used to flush the eyes and also to wash wounds, but it should be noted that when the drug is dripped, it is still necessary to pay attention to the drip rate, if it is used in large quantities, it can also lead to some allergic reactions or infusion reactions. In addition, if used for a long time, it is also necessary to monitor the concentration of sodium, potassium and chloride ions in the blood serum.