I'm guessing my doctor will go along with trying this, all arrows seem to point in that direction in terms of causality, and there's no real downside even if it doesn't do the trick
Traditional subcutaneous needle sizes extend up to 12.7 mm
Vitamin B12, Fact Sheet for Health Professionals, National Institutes of Health, Office of Dietary Supplements Common questions about hydroxocobalamin, NHS (National Health Service), Hunt A, Harrington D, Robinson S
Doctors should hand out B12 shots almost by default, based on symptoms alone
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