Dr Laura Geige Medical Director and Senior Aesthetics Practitioner at Its Me & You Clinic, with a background in dentistry, medical aesthetics and cosmetic dermatology
B12 injections can help restore B12 levels and alleviate symptoms in those with these conditions
Injections may be given weekly or biweekly for a short period when levels are low or symptoms are present
Doses are not equivalent across routes, so published research treats each route's dosing separately
The peptides selective mechanism distinguishes it from broader-acting hormonal therapies with more complex side effect profiles
Certain health conditions such as intestinal or stomach problems, poor nutrition, cancer, HIV, pregnancy, old age, veganism, and alcoholism can cause vitamin B12 deficiency