bpc-157 human clinical evidence review safety fda warning If worked as well as the internet says it does… …we'd probably have high quality trials by now. Instead we have... Lots of rat studies. Lots of podcasts. Lots of Is BPC‑157 a Risk? Safety,
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This applies especially to those on a vegetarian or vegan diet

Most "B-12 deficient symptoms" are actually folate deficient symptoms, since they include all the effects of pernicious anemia and megaloblastosis, which are due to poor synthesis of DNA when the body does not have a proper supply of folic acid for the production of thymine

Lower purity products may contain synthesis byproducts, degradation products, or contaminants that reduce effectiveness or introduce safety concerns
Consider some form of liquid or tablet/lozenge that can be sucked on or dissolved in the mouth

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Any soreness after is typically mild and short-lived