The most bioavailable, natural and compatible form of Vitamin D is extracted from Cladonia Rangiferina, a species of lichen belonging to the genus Cladonia that contains Vtamina D3 in good quantities.

The phases of extraction and concentration of the vitamin are carried out cold with ethanol, without the use of toxic solvents. Olive oil and tapioca maltodextrin are used as excipients. Compared to normal extraction from the animal kingdom, vitamin D3 from Icelandic lichens offers greater bioavailability: a molecule for good bioavailability must be sufficiently hydrophilic to be solubilized in biological fluids and sufficiently lipophilic to cross the membranes.