These include: Having trouble absorbing B12 from food because of conditions like pernicious anemia or stomach problems
Shots can go into muscles or veins
Important safety questions include product purity, dose accuracy, drug interactions, liver and kidney considerations, blood sugar changes, cardiovascular risk, pregnancy or breastfeeding status, and long-term exposure
Many patients find that as they adapt to their maintenance dose, they can tolerate occasional higher-fat meals without significant symptoms
There is also the slight risk of nerve injury with IM shots
Other factors that could lead to B12 deficiency are: Lack of adequate production of the intrinsic factor needed for B12 absorption B12 deficiency is common in elderly people as absorption of the vitamin reduces with age People who have had any intestinal surgery, such as that for weight loss Those with gut conditions such as Crohn's Disease, inflammatory bowel disease, or celiac disease QUESTION See Answer Vitamin B12 injections Vitamin B12 supplements are given based on the condition that causes deficiency