b12 injection is painful Shots in Friso, Sherman, Anna. and Sunnyvale, TX b12 injections are they painful

Common symptoms can include: Extreme fatigue Lethargy Loss of appetite headaches Feeling faint or dizzy Breathlessness Headaches Heart palpitations Tinnitus Additional symptoms of B12 deficiency can include psychological problems such as low mood, irritability, depression, cognitive changes, or blurred memory

Moreover, megadoses of up to 2,000 mcg are considered safe in treating B12 deficiency, but its best to avoid excessive amounts of any vitamin, especially when not needed

doi: 10.7861/clinmedicine.15-2-145

Hydroxocobalamin lasts longer, possibly needing less frequent doses

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People following vegetarian or vegan diets may also need a more reliable source, since B12 is primarily found in animal products