Its Vitamin B12 also plays a key role in reducing levels of an amino acid called homocysteine, high levels of which have been linked to chronic conditions like heart disease, stroke, and Alzheimers
The disadvantage is no flexibility to choose your own concentration, and the solution begins degrading from the moment it is mixed at the pharmacy, not from when you open it
Extremely concentrated solutions (over ~5 mg/mL for most therapeutic peptides) can hit solubility limits and remain cloudy
Insulin is a peptide for example, as are many widely used GLP-1 medications used for weight loss, according to Harvard
Proton Pump Inhibitors, H2-Receptor Antagonists, Metformin, and Vitamin B-12 Deficiency: Clinical Implications