This depends on how severe the deficiency is, any health conditions, and how well the therapy works
Report any unusual or persistent symptoms to your care team, and seek prompt medical attention for severe reactions such as difficulty breathing, chest pain, or signs of an allergic reaction
The Best Time to Take a B12 Injection If you have a big event coming up, such as finals week, a vacation, or a wedding, you might be wondering about the best time to take a B12 shot to ensure you feel the benefits when you need them
Even though vitamin B12 shots can be very helpful, theres also a chance that theyll have a few drawbacks
[3] : 313 The most common cause in developed countries is impaired absorption due to loss of gastric intrinsic factor (IF), required for absorption