what sublingual b12 can be injected vs. B12 Injections: Which Option Is Right for You? – WhyNotNatural Vitamin B12 Injections: Unlock Energy,

Another class of gastric acid inhibitors known as histamine 2 (H 2 )-receptor antagonists (e.g., cimetidine, famotidine, and ranitidine), often used to treat peptic ulcer disease, has also been found to decrease the absorption of vitamin B 12 from food

PMID: 35783198

B12 can also lead to improved mental functions like memory and concentration, better sleep, less stress, and even healthy skin, hair, and nails

Signs Your Brain Fog Is Not Just Stress Here is a simple way to think about the difference: If your brain fog has been hanging around for weeks, does not budge with rest, and comes with any of the physical symptoms listed above, that is worth taking seriously