None of the Marketing Authorisation Holders in the UK use any clinical evidence for optimal dosage of 3 monthly treatment and base the information written in their Patient Information Leaflet upon BNF Guidelines and the Martindale Drug Reference book
References, Journal of the American Board of Family Medicine, 2020, " Effectiveness of oral versus intramuscular administration of vitamin B12 for treating vitamin B12 deficiency Brito, A., Habeych, E., Silva-Zolezzi, I., Galaffu, N
In her estimation, it "has the potential to save millions of pounds for the NHS"
For instance, those with severe vitamin B12 deficiency may require weekly or biweekly shots until their blood levels return to normal
After positively identifying my patient (my lab supervisor), and double checking that the insulin type (rapid acting Humalog) was accurate and not expired, I proceeded to uncap the needle, picked up the vial of insulin and then promptly botched the draw by ramming the tiny needle tip into the metal seal of the insulin vial, rendering the needle dirty, dull and useless
Let it absorb