Hoy et al., 2013
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

Some users report headaches, injection site irritation, or not much at all. But the absence of loud side effects in forums is not the same thing as a well characterized safety profile
Potential Key Benefits*: Encourages collagen and elastin production May reduce fine lines and wrinkles May improve skin texture and firmness Supports enhanced wound healing and scar reduction May promote hair growth and thickness Made in America in a cGMP Facility Questions or Concerns
it is safe for rinse-off products when used in concentrations less than 1%. Concern over cytotoxicity has resulted in the banning of Hydroquinone from use in skin products in some countries
Timing Your Oral BPC-157 Protocol for Best Results Once you've settled on a dosage range, the next question is when to administer it