Before you start taking Vitamin B12, and after every refill, carefully read and understand the product information provided. If you are unsure how to use it, call your doctor or pharmacist as proper use will provide the most benefit.
Your dose is based on your condition, and test and your previous treatment history. It has to be used as directed to get the most benefit and treat your specific condition.
Consult your doctor if you take proton pump inhibitors (PPI's) as it may affect how your body absorbs sources of vitamin B12 and reduce your vitamin B12 levels. Folic acid may help if recommended by your doctor and taken appropriately.