how much b12 is in the injection Vitamin Dose for Adults: 7 Dosage Facts B12 Shots for Weight Loss:

it goes into the muscle and is steadily absorbed without any line or longer sit

Calcium Hyperparathyroidism Cancer Sarcoidosis Tuberculosis A rare genetic disorder called familial hypocalciuric hypercalcemia If you suspect you have hypercalcemia, visit your doctor to get your levels tested and plan your treatment

doi:10.29245/2690-0009/2020/1.1110 Galloway M, Rushworth L

Pyridoxine hydrochloride (B6), 10-mg

The intranasal forms of methylcobalamin, vitamin B12, should be administered at least 1 hour before or 1 hour after ingestion of hot food or liquids

The key point: the best option depends on the reason for low B12 and your clinical context