Vitamin D is among the because it’s one of the hardest nutrients to get through food, which is probably why around 75% of Americans are vitamin D deficient .Oily fish, like salmon, sardines, and mackerel, liver, and egg yolks are the only really good food sources. Let's face it — these might not make it on your plate very often.
also includes a combination of vitamins, minerals, and herbs, including vitamins C and E copper, zinc and chrysanthemum flowers, and Lycium fruits. Clinical research has shown that the combination of vitamin C and vitamin E, copper, and zinc can target age-related vision issues. Long-term research also indicates that this particular mix of vitamins and minerals reduces vision loss by up to five years.