The NIH Office of Dietary Supplements identifies post-bariatric surgery patients as a group requiring monitoring and potentially injectable supplementation
"Some people are deficient and feel a lot better when given a shot, but just to pep you up, there's no study that says it's helpful." B12 is created by bacteria, including those living in the digestive tract
Dietary Reference Intakes for Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline
I found your product and she feels that it won't be as absorb as much vs giving him shots
Neurological Function & Vitality