Potassium Nitrate provides essential nutrients.
Collapse, Convulsion, Cyanosis (bluish discoloration of the skin), Flushing (sense of warmth in the face, ears, neck and trunk), Gastrointestinal discomfort, Headache, Altered heart rate, Decreased blood pressure, Methemoglobinaemia (presence of methaemoglobin in the blood), Vertigo
Potassium Nitrate is used in the treatment of nutritional deficiencies.