Insufficient stomach acid Stomach acid, aka hydrochloric acid, plays an important role in releasing vitamin B12 from the proteins in food, which is later on absorbed through the intestine
A well-formulated 2 % serum with the right pH , vehicle and stability can out-perform a cheap 4 % serum every single time
It may also influence serotonin and GABA pathways, both important for sleep regulation
Important things to keep in mind include: Serum B12 levels should be normal for most people Methylmalonic acid (MMA) and homocysteine levels can show if B12 is really working, even if levels seem fine How symptoms change is also important When and How to Adjust Dosing Regimens Doctors might need to change the dose based on test results and how the patient is doing
Heavy Metals: Mercury, Lead, and Oxidative Damage Toxic metals, such as mercury and lead, can cause significant damage to mitochondrial health and cellular function
However, high-dose niacin (as a medication for cholesterol) is generally not recommended during breastfeeding, because significant amounts could enter milk and cause unwanted effects in the nursing infant (flushing, for example)