Both vitamin B12 and folic acid can be obtained through diet, but they come from different sources. Vitamin B12 is primarily found in animal products such as meat, fish, eggs, and dairy. In contrast, folic acid is present in a variety of foods, including leafy green vegetables, legumes, fruits, and fortified cereals.
APIs can be synthesized through various chemical processes, derived from natural sources, or produced using biotechnological methods. Depending on the desired therapeutic effect and the chemical structure required, different approaches are employed. For instance, the synthesis of small molecule APIs typically involves organic chemistry techniques, while biologics may be developed through advanced biotechnological procedures such as recombinant DNA technology.