what sublingual b12 can be injected vs. B12 Injections: Which Option Is Right for You? – WhyNotNatural Vitamin B12 Injection - We

Chronic treatment should be done with an oral preparation in patients with normal intestinal absorption

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

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

PMID: 35783198

But whats the difference between the two

According to the NLM, good sources of vitamin B include: Fish like salmon Poultry like chicken and turkey Meat like beef or lean pork chops Leafy greens like spinach Legumes like beans, peas, and lentils Still, many people choose to get more vitamin B by taking a supplement