How are injections different to supplements
Peptide pH, salt form, purity, residual solvents, storage history, and lyophilisation quality can all affect reconstitution
There are a couple of good options for sublingual Vitamin B supplements and one of my favourite brands is Seeking Health as you get to choose from a number of different B12 combinations
Chloramphenicol is known to cause bone marrow suppression, especially when serum concentrations exceed 25 mcg/ml
B12 injections are typically sourced through your primary care provider, a local compounding pharmacy, or a telehealth functional medicine clinic
If you still dont have an improvement in your symptoms on sublingual B12 then consider using methylcobalamin injections