Please check the details.
The dosage noted is far in excess of what can be received from diet. The source of Vitamin D is not diet,it is manufactured by the skin as a result of exposure to the sun.
Recent study reveals that the vitamin D added to milk is barely adequate to prevent rickets in children. Vitamin supplements also contain lower levels than the 4000 units in the study.
Drinking milk and eating cheese doesn't cut it! Eating fish three times a day is better for Vit D.
Other studies have found that people who take Vit D supplements aren't as prone to catch flu.
From what I’ve always read, they say 20 minutes exposure to the sun a day is what’s needed for Vitamin D production. Who knows? Maybe I’ll ask them to check it next time.