$5 OFF A-D-K Vit supplement, when you call or reply. Why CMWL? Reason#12; Vitamin D deficiency. A study published in Nutrition Journal found that over 42 percent of American adults are not getting adequate levels of Vitamin D. The best way to naturally boost your Vitamin D levels is to spend some time each day out in the sun. A 10-15 minute walk outside is a great way to boost your Vitamin D intake. You can also increase Vitamin D by selecting foods rich in the nutrient. Fatty fish, such as tuna or salmon, eggs (with the yolks), fortified milk, and liver are all excellent sources of Vitamin D. And if you can’t include these types of foods into your diet due to allergies or other restrictions, you can get your Vitamin D with our A-D-K nutraceutical. Boosting with 10,000IU Vit D-3.