US$ 25.53
b12 injections cfs & Home Nurses for Chronic Fatigue & Deficiency Can Vitamin B12 Help Clear
Description
When adverse effects occurred, they were typically mild and transient, with the most common being mild to moderate headaches (similar frequency to placebo groups), minor injection site reactions (redness, slight swelling), and gastrointestinal effects at higher oral doses (nausea, diarrhea)

Students f or improved concentration during exams

PMID 18245139

(This dosing is mentioned for completeness
