That concentration matches the salt level of human blood and cellular fluid, which is what makes saline isotonic
Pain is maybe 35% better
Vitamin B12 deficiency is something that can happen to anyone, but it is especially prevalent in people aged 50 and older

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Therefore the trials will not happen, and BPC-157 will sit in regulatory limbo while clinics sell it under the "research use only" loophole
Many cases of small-intestinal-bacterial-overgrowth (SIBO) occurs when colonic bacteria backwash into the usually sterile jejunum