Milk is fortified with vitamin D, and drinking non-fat milk gives you calcium, vitamin and energy. However, if you decide to take supplemental vitamin D, 40...

Câu hỏi :

Milk is fortified with vitamin D, and drinking non-fat milk gives you calcium, vitamin and energy. However, if you decide to take supplemental vitamin D, 400 to 800 IU per day will safely prevent any deficiencies.