Natrum Muriaticum (Natrium Chloratum, Sodium chloride) is the water-distributing tissue salt. It controls the ebb and flow of the body fluids. It is used in cases of excessive moisture or excessive dryness in any part of the system.
It is used for the coldness of hands and feet, for watery discharge of the nose, coryza with fluid secretions, hay fever, loss of sense of smell, worms, constipation, excessive perspiration, excessive saliva and tear flow.
On the psychological level, use Natrum Muriaticum for depression, indifference to comforting and for the desire to bite one’s nails.