Spinach powder is such an excellent alternative to raw spinach because it is essentially concentrated spinach. If you choose organic spinach powder, then the powder will be pure spinach with no preservatives or chemicals to detract from benefits of the spinach powder.
To get the most nutrition from spinach powder, you will want to choose a product that has been freeze dried rather than dehydrated with heat and then ground into powder. The reason for this is that, as with most fruits and veggies, when you cook spinach, it loses some of its nutritional value.
While there are claims that young spinach makes a more nutritional spinach powder than full grown plants, there is no scientific evidence to support this claim. In most cases, when a company makes this type of claim they usually are trying to sell their spinach powder for more than their competitors. The FDA does not regulate spinach powder supplements.
Spinach Powder Nutrient Content
You can expect to get the following nutrients from spinach powder:
Vitamins A, C and K
High levels of iron