Do not warm. Warming may limit benefits of LGG. Microwaving formula may cause serious burns to baby. Failure to follow these instructions could result in severe harm. Once prepared, infant formula can spoil quickly. Either feed immediately or cover and store in refrigerator at 35 - 40°F (2 - 4°C) for no longer than 24 hours. Do not use prepared formula if it is unrefrigerated for more than a total of 2 hours. Do not freeze prepared formula. After feeding begins, do not refrigerate feeding bottle. You must use within 1 hour or discard. This product does not look or taste like milk or soy formulas. It may separate in the refrigerator. Shake well before feeding. As an added safety precaution, please check that "NUTLGG" is embossed on the bottom of this can.