US$ 22.04
bariatric surgery and b12 injections Vitamin Deficiency After Gastric Bypass – Fusion Bariatric Surgery Supplements: B12 -
Description
Elastic Plastic Surgery section

Its primary function is to transfer a methyl group to nicotinamide, a form of vitamin B3
Hill, T

On its own Intramuscular, these injections are more common, as they have better results

At least that uses known technology
