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Vitamin B12 is present in foods of animal origin, including meat, fish, poultry, eggs and dairy products
Comparing their side-effect profiles requires cross-study synthesis, not direct data
Supplemental L-arginine and nitrate tolerance during continuous transdermal nitroglycerin therapy
But, if your symptoms are more severe, you might need a higher dose or injections
Atrophic gastritis, a condition that depletes stomach acid, also reduces B12 absorption
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