Symptoms of a vitamin B12 deficiency include fatigue, lacking energy, loss of appetite, headache, mouth ulcers, changes in vision, feelings of depression, and hindered mental capabilities
As explained in this overview of what peptide serum is and how it fits a routine, peptides are generally used as signaling or support actives rather than cell-turnover accelerators
A small amount of water with food is fine, but large quantities can dilute digestive enzymes and stomach acid
Another enzyme that is involved in AD disease is the neutrophil elastase (NE), which is a broad-spectrum serine protease released from neutrophils and macrophages
One such piece of research is a 2020 review published in the journal Nutrients
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