The trial tested oral administration primarily, and no controlled study has tested subcutaneous injection in humans
Who benefits most from B12 shots
Biotin may interact with: Certain laboratory assays , potentially causing inaccurate thyroid or hormone test results High-dose biotin supplementation may interfere with specific lab diagnostics Clinical judgment should guide concurrent therapy and laboratory monitoring
Pernicious Anaemia Society Feeling dizzy again after b12 injection Hi guys have had 5 injections b12 over last fortnight for low b12 as per advice gp, held of for week on 6th injection because of heaviness in arms, legs and unstediness, head had just cleared after feeling spacey and full, was slowly recovering however had final injection yesterday, woke this morning with extreme dizziness and ears and head feeling full again, went to gp as heart felt irregular, ecg and blood pressure normal anyone else experienced this
The active form is readily absorbed and has been linked to migraine reduction in some patients