Emergen-C is dietary supplement that is both low in sodium and can fit as part of a healthy everyday diet. Sodium levels vary by formula and range between 30 mg to 110 mg, or 1% to 5% of recommended daily value. Most Emergen-C formulas are between 60 mg to 70 mg, or approximately 3% of recommended daily value. Sodium levels are indicated within the Supplement/Nutrition Facts panel of label.