Melissa's Red onion nutrition facts

One serving of Melissa's Red onion (1 cup chopped) has 67 calories, which works out to 42 calories per 100 g. That is about 3.4% of a 2,000-calorie day.

Not especially. It has 1 g of protein per serving, and protein supplies 6% of its calories. Foods where protein provides 30% or more of calories are generally considered protein-dense.

It is hard to fit into a strict keto diet. One serving has 14 g of net carbs and 94% of its calories come from carbohydrates, while most keto plans cap net carbs at 20–50 g per day.

5 mg per serving, which meets the FDA definition of low sodium (140 mg or less).