Salt substitutes are eible products designed to taste similar to table salt, which is mostly sodium chloride. They usually contain mostly potassium chloride, whose toxicity is approximately equal to that of table salt in a healthy person (the LD50 is about 2500 mg/kg, or 190 g for a person weighing 75 kg). The RDA of potassium is also higher than that for sodium, yet a typical person consumes less potassium than sodium in a given day.