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