If you suspect you have experienced side effects from a prescribed B12 medicine, you can report this through the MHRA Yellow Card scheme
Case Study 3: Sarahs Preventive Care Coverage Sarah, a 75-year-old Medicare beneficiary, had a routine wellness exam where her doctor identified potential symptoms of a B12 deficiency
If the issue lies with absorption, B12 shots or IV infusions are an effective alternative to oral supplements because they are administered via injection or intravenously, meaning they do not need to be absorbed through the digestive process
Energy production (metabolism) Neurological (brain) function Vitamin B12 plays a key role in the normal functioning of the brain and nervous system
Retatrutide's Phase 2 trial data (Jastreboff et al., NEJM 2023) identified a side-effect profile broadly consistent with other incretin-based therapies: Gastrointestinal : Nausea, vomiting, diarrhoea, and constipation were the most commonly reported adverse effects, particularly during dose escalation
It contains a cyano (cyanide) group in its structure, which makes it more stable than other forms of vitamin B12 as the cyanide stabilizes the molecule from deterioration
