Superior Source Vitamin D3 400 IU (as Cholecalciferol)

Vitamin D works in conjunction with Calcium to help develop and maintain strong bones and teeth. Superior Source offers a new Extra Strength 1,000 IU Vitamin D which can help to ensure optimal health, as stated in a recent review study. All Superior Source Vitamin D products are D3, the finest source.* Potency: 400 IU Quantity: 100 TabletsDirections: As a dietary supplement, dissolve one MicroLingual® tablet under the tongue daily. May also be swallowed as you would a regular tablet.