With capsules, you're making assumptions about how much survives digestion and how much crosses the intestinal barrier into circulation and the honest answer is that nobody knows for sure in humans
Recently, the parent of a 16-year-old recovering from ACL reconstruction asked me where they should inject BPC-157 into their childs knee
The barrier integrity of the model was verified by permeability measurements for the transcellular biomarker EBA and small hydrophilic paracellular reference molecule fluorescein
[DOI] [PubMed] [Google Scholar] [31].Khan SA, Campbell AM, Lu Y, An L, Alpert JS, Chen QM
FAQ's on Glutathione for Skin Whitening - Q1
One reason is because non-heme iron from vegetarian sources, such as legumes and leafy greens, has poor bioavailability (Aspuru 2011)