0.25mg is often sub-threshold for noticeable effects that's expected
While one shot a month is typical for healthy individuals, they can be taken more oftenweekly or biweeklyfor an extra boost, especially during busy or low-energy periods
Active malignancy requires careful evaluation Tissue-repair signaling activity may not be appropriate in patients with active or recent malignancy
You should also contact your GP if: You are unable to attend scheduled maintenance injections, as missing doses can lead to symptom recurrence You develop new symptoms that might indicate other deficiencies or health problems You are planning pregnancy, as B12 requirements may change You experience persistent side effects such as headaches, dizziness, or gastrointestinal symptoms If you experience any side effects, talk to your doctor, pharmacist or nurse
Low levels of B12 can also be associated with those who have anemia or certain autoimmune disorders, and some prescription medications can also interfere with vitamin absorption