Ddrops® 365 drops provide an easy way to get 1000 IU of pure vitamin D3 in just one liquid drop. Each bottle supplies the daily recommended vitamin D for the family and provides the necessary support for immune function and the maintenance of bones and teeth. Dosage: Take 1 drop daily, or as directed by a healthcare practitioner. The drop may be licked off a clean surface, such as the back of a washed hand, or directly onto food or a drink.