Large quantities can produce gastrointestinal irritation and vomiting. May produce weakness and circulatory problems. May affect heart. In severe cases, ingestion may be fatal. Contact may cause irritation or rash, particularly with moist skin.
Potassium chloride is moderate eye irritant.
Redness, tearing, possible abrasion can occur. Persons with impaired kidney function may be more susceptible to the effects of the substance. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Induce vomiting immediately as directed by medical personnel.