Injection-site irritation can happen with any shot, and ingredient-specific reactions are possible
B12 deficiency is one of the most common and most frequently overlooked nutritional deficiencies, affecting those on plant-based diets, adults over 50, individuals on certain medications, and anyone with reduced gastrointestinal absorption
This is not uncommon and may be related to the body adjusting to a rapid increase in B12 availability, especially in patients who were significantly deficient
Users frequently report improved skin quality, faster wound healing, and reduced inflammation throughout the body
Finally, one very recent study in the USA has demonstrated that in some individuals with neurological symptoms, the presence in the blood of antibodies against this receptor may interfere with the proper uptake of B12 into the brain