sometimes they may recommend a nutrition plan tailored to your condition (for instance, high-protein diet if you have wounds to heal, etc., along with the vitamins)
Research peptides sold online are not regulated for purity, dosing accuracy, or sterility, carrying substantial risks
The groups most likely to develop B12-related hair and skin changes are the same ones at risk for deficiency generally: vegans and vegetarians, adults over 50, people on long-term metformin or proton pump inhibitors, anyone who's had bariatric surgery, and people on GLP-1 protocols whose reduced appetite has significantly lowered their overall nutrient intake for an extended period
It is not available as a licensed medicine through the NHS or any regulated UK pharmacy
It is stable to autoclaving for short periods at 121 C (250 F)