More than 97% of women age 19-50 are not getting enough Vitamin D from their diet. That’s why we include 50 mcg of vegan-certified Vitamin D3 in Essential for Women 18+ to help support normal immune function. Better yet, Essential for Women 18+ was shown to increase vitamin D levels 43% over 12 weeks, as compared to no change in a placebo group in a university-led clinical study.*