ingredients in b12 injection Vitamin B12 3000 mcg lasting and sustained support with 5 B!2 Inject Kit: Package Insert
Description
[1] Because intrinsic-factor-dependent uptake in the distal ileum can be absent in conditions such as autoimmune gastritis, pancreatic insufficiency, or bariatric surgery, the intramuscular or subcutaneous route bypasses gastrointestinal barriers and reliably restores serum concentrations

Always speak with your healthcare provider about everything you are taking
You can combine your B12 shot with other injections and IV infusions offered at our clinic to provide additional nutritional support and hydration

Adults usually get 1000 mcg (1 mL) of Vitamin B12

Seamless process Works really well I love this product and this company so much

Chapter 5, Human Vitamin and Mineral Requirements: report of a joint FAO/WHO expert consultation, Bankok, Thailand