Specific situations requiring medical review include: Severe or persistent gastrointestinal side effects from Mounjaro that significantly limit your food intake for more than a few days You are taking metformin in addition to Mounjaro, as this combination increases B12 deficiency risk You have a history of pernicious anaemia, gastric surgery, or conditions affecting nutrient absorption You are considering stopping B12 injections whilst taking Mounjaro You experience any unexplained neurological symptoms Urgent medical attention is needed if you develop severe, persistent abdominal pain (which may radiate to the back), persistent vomiting, fever, or yellowing of the skin/eyes, as these could indicate pancreatitis or gallbladder problems Your GP or practice nurse can arrange blood tests to check your B12 levels (serum B12, holotranscobalamin, and if borderline, methylmalonic acid levels may be used where available) and determine the appropriate frequency of B12 injections if deficiency is confirmed

Vitamin B12 plays a critical role in the bodys energy production, but its deficiency can lead to a host of debilitating symptoms, including tiredness, brain fog, and muscle weakness
Researchers should understand this status and its implications for safety and legality
In individuals with pre-existing gastrointestinal conditions such as inflammatory bowel disease, coeliac disease, or irritable bowel syndrome, introducing any new supplement may temporarily affect bowel habits as the digestive system adapts
AIT combines the actions of acupuncture with vitamin B/homeopathic biomedical pharmaceuticals that are FDA regulated
Well cover how to give Vitamin B12 shots, including how to measure the dose, where to inject, and how to do it yourself