doi:10.1089/acm.2005.11.909
Patients who have undergone gastric banding should be aware of the following signs that may indicate falling B12 levels and warrant prompt blood testing: Neurological symptoms: Tingling, numbness, or 'pins and needles' in the hands or feet Difficulty with balance or coordination Memory problems, difficulty concentrating, or 'brain fog' Mood changes, including low mood or irritability Haematological symptoms: Persistent fatigue or weakness disproportionate to activity levels Breathlessness on mild exertion Pallor or a slightly yellowish tinge to the skin Other indicators: A sore, smooth, or inflamed tongue (glossitis) Mouth ulcers occurring frequently It is important to recognise that some of these symptoms particularly fatigue and low mood are non-specific and may overlap with other post-operative nutritional deficiencies, such as iron or vitamin D deficiency

the BPC-157 sequence contains aspartate rather than asparagine, so the sequence-specific deamidation risk that applies to asparagine-containing peptides does not apply here in the same way
It is not a DEA-scheduled substance
For so many of us, feeling a little stressed, a little sluggish, a little forgetful and a little overweight has become a way of life