"Our bodies produce vitamin D3 following sun exposure, which is why it's often called the ""sunshine vitamin."" Changing seasons, heavy clothing, and sunscreen can make it difficult to get enough sun. And while it's possible to get vitamin D3 through our diets, few food sources contain enough vitamin D3 for most of us to reach the recommended daily intake. For those who have difficulty getting their vitamin D, a supplement may be a great option. A single drop of Super Daily D3 provides our bodies with the daily dose of D they need for optimal health. Vitamin D3 promotes teeth, bone, and muscle health; healthy immune and cardiovascular system function; and calcium absorption. Super Daily D3 is unflavored and has no aftertaste, so it's loved by children and adults alike. And with 365 servings per bottle, there's a drop for every day of the year. Place a drop in food or a drink or directly on your tongue.