degradation of b12 injections by age Vitamin for Seniors Oral vs. Intramuscular Vitamin B12
Description
Patients with mild, recently developed deficiency typically respond more rapidly than those who have been deficient for months or years

it just isnt getting enough to work with

42 WuY.LiX.JiaJ.ZhangY.LiJ.ZhuZ.et al (2018)

While some patients have reported weight loss, these effects vary from person to person and are not guaranteed

Yes, many pharmaceutical manufacturers in India provide third-party manufacturing services

J Clin Endocrinol Metab (2010) 95(5):25037
