It may be better to separate BPC-157 from coffee, protein powders, collagen, supplements, and other peptides unless your clinician says otherwise
Butler et al.) This paper was published ten years ago and revolves around the fact that patients with Pernicious Anaemia should be able to passively absorb some B12 through their stomach around 1%
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I guess that's because usually there aren't any - even the acne only affects a very few people