Even if a fragment survives, the intestinal epithelium is a selective barrier: peptides above roughly 500 to 700 daltons struggle to cross via paracellular routes, and transcellular uptake is limited to specific transporter substrates
DSIP (Delta Sleep Inducing Peptide) is a neuropeptide that promotes slow-wave (delta) sleep architecture
Further, this allows creation of a color-coded pressure topographic image, a Clouse plot, in which high pressures are represented by red and orange, while low pressures are displayed in blue and green
Unfortunately, many peopleespecially those with digestive issues, restricted diets, or high stressdont absorb enough B12 from food alone
Proton pump inhibitors (PPIs) and H2-receptor antagonists, used for acid reflux, reduce stomach acid production, which can impair dietary B12 absorption, though this does not directly affect injections
Most protocols run weekly, with some clinics using twice-weekly or every-other-week schedules depending on the formulation and the patient