The documented effects are local skin reactions irritation and the less common allergic contact dermatitis plus the procedural risks of microneedling where it's used as a delivery aid
Note why you are considering MIC-B12, any relevant history around energy, methylation, or B12 status, and any other supplements or medications you take
For ongoing care: 1 mL (1000 mcg) given as an intramuscular shot once a month
AHK-Cu is not an FDA-approved drug
Methylcobalamin supports nerve regeneration, improving neurological health, and is often used in treating chronic pain conditions like diabetic neuropathy
The NHS provides jabs every three months after an initial two-week treatment, but the PAS say patients are "needlessly suffering" from side-effects to the condition