Some factors that influence how long the shot lasts include: Lifestyle and stress levels Diet and alcohol consumption Existing health conditions (e.g., pernicious anemia, digestive disorders) How quickly your body uses or excretes B12 If your energy starts fading or symptoms return before your next scheduled shot, let your provider know
Is it as effective
If you're someone who has eliminated meat, dairy and fortified cereals from your diet, then it is possible that you may require supplements
Signs and symptoms include (but are not limited to): Extreme tiredness (fatigue) Tiredness / lack of energy Pale skin Numbness and / or tingling (paraesthesia) Feeling faint Noticeable heartbeat (palpitations) Feeling short of breath Loss of appetite Ringing in your ears (tinnitius) Unintended weight loss Changes in your vision A yellow tinge to the skin Depression Irritability Changes in the way you feel, behave, and think ('brain fog') A decline in mental function, such as changes to your memory, judgement and understanding (dementia) How long do B12 injections last
For maintenance, most patients receive one injection every 2 to 3 months
Vitamin B12 Supplements Dietary supplements, on the other hand, are concentrated products (tablets, capsules, gummies, etc) that are designed to fill dietary gaps
