trama and b12 injection Cyanocobalamin Vitamin 1000 mcg — Mountainside Medical Cyanocobalamin Injection: Vitamin B12 Deficiency
Description
However, less commonly, keratinized mucosa may also be involved, such as the dorsum (top surface) of the tongue or the gingiva (gums)

Or are they just ignorant about the issues as discussed in others' posts above

What Are Key Recommendations for Supporting MTHFR Mutations
B12 shots use intramuscular injection, depositing vitamin B12 directly into muscle tissue, typically in the upper arm or thigh
