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A few select patients have reported they felt their results lasted as long as 2 years
Some reasons your body may not be able to get enough B12 from food include: Anemia Gastritis Crohns disease Celiac disease Alcohol use disorder Sjgrens syndrome Weight loss surgery, or surgery that removes part or all of your stomach A vegan or strict vegetarian diet (as B12 is only found in animal products) Medications, such as metformin and drugs used to treat gastroesophageal reflux disease (GERD), indigestion, and stomach ulcers Pregnancy Your doctor could also order a B12 test based on your symptoms
Nelson Textbook of Pediatrics (20th ed.)
Injections should be no closer than an inch from each other
How Soon Do You Feel Less Tired After A B12 Injection
2 hrs after reaching the maximum plasmatic concentration, the concentration of active drug is higher in the synovial fluid than in the plasma and the rest is reached in a period of 12 hrs
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