In practice, injections are used when rapid correction or assured absorption is needed
Vegans, vegetarians, people over the age 50, anyone with stomach/bowel issues like chronic gastritis, leaky gut, IBS or celiac, and anyone who regularly takes medications such as Metformin, PPIs (used for GERD), H2 Receptor Antagonists (used for peptic ulcers), or anything that interferes with stomach acid production are actually at risk for vitamin B12 deficiency, and should supplement B12 regularly
Skin reactions can include flushing or generalised itching
Your GP can assess whether symptoms relate to B12 intake, adjust dosing, or investigate alternative causes
Meat and poultry Fish and seafood Eggs and dairy products Fortified plant-based milk and cereals Signs and Symptoms of B12 Deficiency A B12 deficiency shows in many ways
My numbers are almost to a reasonable range, but they are improving