If your intrinsic factor is damaged then you definitely need injections
Instead, humans have to acquire B12 through food sources, taking supplements, or receiving injections from a healthcare provider when they suspect a low Vitamin B12 level
What type of B12 injection is commonly used in the UK
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Symptoms of vitamin B12 deficiency include: Anemia Intestinal disorders and weight loss Fatigue, weakness, lightheadedness Memory loss or confusion Depression or dementia Rapid heartbeat and respiration Mouth or tongue soreness or bleeding Excessive bruising Injections are the most effective means of administration of vitamin B12 since they do not depend on the body's ability to absorb the substance through the gastrointestinal tract
There is insufficient safety data for either compound during pregnancy, and animal studies with GLP-1 agonists showed adverse fetal effects