A facile, fast and green strategy in ethanol is utilized to prepare a new bioMOF, namely CaSyr-1, with the particular characteristics of full biocompatibility given by using just calcium and syringic acid, the later being a phenolic natural product found in fruits and vegetables, permanent porosity with outstanding surface area >1000 m2g-1, and a micropore diameter of 1.4 nm close to mesopore values. Collectively, these data establish CaSyr-1 as one of the most porous bioMOFs reported to date, with high molecular adsorption capacity. The CaSyr-1 adsorptive behavior is revised here through the reversible adsorption of CO2 and the encapsulation of bioactive ingredients in the structure. Remarkably, CaSyr-1 enables the development of triple therapeutic entities, involving bioactive Ca2+, syringic acid and an impregnated drug.