Response speed varies considerably among individuals
Here's how to give yourself a b12 injection
These include: Vegetarians and vegans, as vitamin B12 is mainly found in animal products Older adults, as they absorb vitamin B12 less well with age People with gastrointestinal disorders, like celiac disease or Crohns disease, which can block vitamin B12 absorption Those taking certain medications, such as proton pump inhibitors or metformin, which can also block vitamin B12 absorption Its best to talk to a healthcare professional about whether you need vitamin B12 supplements
Injectable B12 bypasses the digestive system and goes straight into your bloodstream
Elderly patients should call 999 immediately if they experience difficulty breathing, throat tightness, facial swelling, or widespread rash after B12 administration, as these may indicate a rare but serious allergic reaction requiring emergency treatment