is b12 injection better than oral

CYANOCOBALAMIN INJECTION, USP 30000 mcg/30 mL (1000 mcg/mL) 30 mL VIAL Pregnancy and breastfeeding, unless specifically cleared by a physician due to unknown effects cell reproduction https://telyrx.com/media/catalog/product/cache/9aaaa529be23b564cdef775c8c34f077/c/y/cyanocobalamin_vitamin_b12_injection_2000mcg_2ml_injectable_solution_vial_1473_001_sq-bg_ai_gen_1.webp Size:1000 mcg/ml - 10 ml (Pack of 2)

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