Salt

Traditional Use

Primary Actions

• Induces vomiting of retained food, phlegm, or certain ingested toxins when used as concentrated salt water ... this is the classic internal Shi Yan lane and is not a casual household remedy.
• Clears heat and relieves fire-toxic irritation externally ... salt rinses, washes, and powders are recorded for sore throat, mouth ulcers, gum swelling, and some superficial inflammatory complaints.
• Moistens dryness and softens hardness ... small measured use appears in heat-type constipation and in formulas where a salty downward-directing substance is wanted.

Secondary Actions

• This page covers refined medicinal salt `Shi Yan`, distinct from the crude rock-salt and halite lane already represented under `halite`.
• Shi Yan is also important as a processing adjunct because salt-frying is traditionally used to guide certain herbs more strongly toward the Kidneys.

Classic Formulas

• Concentrated salt-water emetic methods ... older emergency practice for retained food, phlegm, or swallowed toxins before modern poison-control standards existed.
• Salt-rinse and salt-powder external methods ... long-standing local-use traditions for throat, mouth, gum, and dental complaints.
• Salt-processing of Kidney-directed medicinals ... a classic preparation strategy rather than a stand-alone formula, but central to Shi Yan's clinical identity.

Classical References

• Classical materia medica places Shi Yan among the emetic and fire-clearing substances, emphasizing vomiting induction, softening, and local cleansing rather than tonic use.
• Later materia medica traditions preserve numerous external applications for teeth, throat, eyes, and sores, reinforcing that medicinal salt was often used topically or in carefully measured doses.
• Processing theory repeatedly states that salt helps direct medicinals toward the Kidney channel, which is one reason Shi Yan remains important beyond its own stand-alone indications.