The most commonly reported side effects are mild and transient, including injection site reactions (redness, slight swelling, or tenderness), mild headaches during the initial days of use, and occasional dizziness or lightheadedness, particularly when starting the peptide
A significant sign that the injections are working is a reduction in symptoms of vitamin B12 deficiency, such as weakness, rapid heart rate, easy bruising or bleeding, and pale skin
PMID: 10784463 Ehsan Ullah Syed, Mohammad Wasay, Safia Awan
GLP-1 peptides commonly cause: Significant nausea : Often severe enough to require dose titration over months
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
The peptide amount stays the same
