Herboplanet Olea D3 Max Drops 20ml is a food supplement containing vitamin D3 and olive leaf extract. It is used to strengthen the immune system, improve calcium and phosphorus absorption, and maintain bone health. It may also help regulate blood glucose levels and promote cardiovascular health. This product comes in drop form and should be taken according to the manufacturers instructions. Ingredients The main active ingredient of Herboplanet Olea D3 Max Drops 20ml is Olea europaea (olive) dry extract.