b12 injections redit what is your levels are you on or tablets ? : r/B12_Deficiency bac water amazon reddit B12

When side effects do occur, they are typically mild and may include: Mild gastrointestinal symptoms such as nausea, diarrhoea, or upset stomach, particularly when starting supplementation or taking high doses on an empty stomach Skin reactions including itching, rash, or a sensation of swelling, though these are uncommon Headache or dizziness in some individuals, particularly with intramuscular injections Injection site reactions (pain, redness, or swelling) when B12 is administered via intramuscular injection for deficiency treatment It is important to note that serious adverse effects are rare

The end result is gastric atrophy and depletion of intrinsic factor leading to poor absorption of food-bound, free, and biliary vitamin B 12 .2 Malabsorption is more complete and severe in PA compared to food-cobalamin malabsorption which is more partial in nature,2 and so the manifestations are more overt and severe in PA

Clinically significant mainly in severe deficiency cases

National Institutes of Health Vitamin B12 2