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Better than anything else you can get for a B12 and appetite suppression

Don't expect much in the first week

Site rotation is the standard answer

This is useful if you are going to be travelling or away from home when your injection is due

Since I had the doctors ear and even though I was not experiencing acute signs nor symptoms of low B12 (pernicious anemia), I took the opportunity to ask him about the possibility of beginning monthly vitamin B12 injections He was aware of my years of nursing practice and thoughtfully considered my request

Human pilot evidence Three small pilots: a 12-patient knee-pain case series (Lee & Padgett, Alternative Therapies in Health and Medicine, 2021)