Award-winning vitamin D Oral Spray is a maximum strength 4000IU vitamin D3 oral spray, designed to elevate and maintain vitamin D levels in the body. Benefits: Supports a normal immune system Aids normal muscle function Maintains normal bones and teeth Tooth-kind formulation Easy to use 15ml Bottle Spray Formulated to provide optimal nutritional delivery, each spray provides the vitamin D in micro-sized droplets that coat and permeate the soft tissue of the inner cheek, delivering the essential nutrients into the rich vein system below. This allows the formulation to quickly enter the bloodstream for optimal absorption.