Not everyone feels comfortable with needles, and that's perfectly okay
Vitamin B12 deficiency is primarily caused by autoimmune pernicious anemia, dietary restrictions such as vegetarian or vegan diets, and medical conditions that interfere with absorption such as celiac and Crohns disease
No IGF-1 / glucose impact: Unlike full GH, it does not appear to raise IGF-1 or impair glucose tolerance [5] [6]
Detoxification is difficult and not suitable
Your doctor may arrange investigations including a full blood count, serum folate levels, and in some cases, anti-intrinsic factor antibodies if pernicious anaemia hasn't been previously confirmed
The body excretes it faster, so you may need more frequent jabs