Below is a clinicians view of why it happens, what counts as normal, and the warning signs that mean you should stop waiting it out and speak to a doctor
A 2015 NIH review highlighted that 1,000 mcg/day oral doses normalized B12 in Roux-en-Y patients as effectively as injections, with 95% compliance
In addition, IV drips and injections do not contain any artificial or toxic ingredients, parabens, or other preservatives, unlike store-bought oral supplements
Patients frequently ask me if this "gut healing peptide" can treat inflammation, reverse a leaky gut, or manage irritable bowel syndrome (IBS) flares
Plasma levels are highest in your early 20s and decline by more than 60% by age 60, a biological change that correlates directly with reduced tissue repair capacity, slower wound healing, and visible changes in skin and hair quality
It's a hard line