As of February 2026, both compounds have been reclassified as Category 1 peptides, meaning they may be compounded by licensed compounding pharmacies under a physician prescription
They will evaluate whether youre experiencing a B12 deficiency or could benefit from the injections for energy, metabolism, or overall health
Cenexa Labs has no affiliation with Professor Sikiric or the University of Zagreb, and this information does not constitute an endorsement of any products or services
Knowing about B12 deficiency symptoms and risk factors helps find who needs them
Some of the key roles of B12 in your body include: Helping in the normal functioning of the nervous system Playing a vital role in DNA synthesis B12 is among the vitamins needed in the breakdown of amino acids and fatty acids Helps in the creation and maturation of red blood cells (hemoglobin) in the bone marrow Supports the production of digestive enzymes and the delivery of essential nutrients to and from cells Its vital to the development of a fetus in pregnant women Vitamin B12 deficiency can cause different symptoms, such as fatigue, anemia, headaches, pale skin, vision problems, mouth/tongue sores, weakness, and changes in cognitive functioning
