This is completely normal and does not indicate damage, contamination, or reduced quality
Maybe, but what about the paper entitled, Vitamin B-12 Induced Acne
But even then, the injection site makes a difference
BPC-157 vs TB-500 vs the Stack: Side-by-Side Evidence Strength: What's Solid, What's Extrapolated It matters to separate what the research actually shows from what gets assumed on top of it
Circ Res 116:15611578 Sikiric P, Seiwerth S, Grabarevic Z, Rucman R, Petek M, Jagic V, Turkovic B, Rotkvic I, Mise S, Zoricic I et al (1997) Pentadecapeptide BPC 157 positively affects both non-steroidal anti-inflammatory agent-induced gastrointestinal lesions and adjuvant arthritis in rats
If you have a vegetarian or vegan diet, seek out fortified foods such as cereals, plant-based milk alternatives, and nutritional yeast