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If the label lists ergothioneine, or only two of the three compounds, it is a different product
Are there any side effects
B12 may be injected into a muscle or beneath the skin at 100 mcg every day or alternate days for 7 days, and then every 3 or 4 days for a month
Yes it hurts afterwards in my arm
Clinical Scenarios for IV Administration IV B12 is very helpful in some situations, like when the deficiency is severe and causing neurological problems, in cases of malabsorption like Crohns disease, or when taking pills doesnt work
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