can vitamin b12 injections delay your period Heavy Periods can b12 injections affect your

Initial supplemental dose is usually 1000-2000 g/day for week or two and then 1000 g/day for life

If you have it, you dont make enough of a protein called intrinsic factor

The positive clinical outcomes were accompanied by unforeseen effects that had not been predicted by conventional in vitro immunology

Patients should seek emergency medical help (call 999) if they experience: Difficulty breathing, wheezing, or throat tightness Swelling of the face, lips, tongue, or throat (angioedema) Widespread urticarial rash (hives) developing rapidly Dizziness, fainting, or rapid heartbeat suggesting anaphylaxis These symptoms typically occur within minutes to hours of administration, most commonly with injectable preparations