Freeze-drying, also called lyophilization, is a dehydration technique that was first used by the food industry to process astronaut and military food. It helpsunited home ferrous sulfate how to take to extend the shelf-life of food while preserving iiron fumarate bioavailabilityts original color and flavor. The freeze-drying process includes instant freezing at an extremely low temperatu1 liter lactated ringer’sre (ferrous fumarate b12 and folic acid and vitamin c tabletsunder -40℃) and vacuum para que sirve el ferrous gluconatedehydration. [1]