Can B12 be given subcutaneously at all, or do you need a different method
Usually the needle size is 25 or 27 gauge
The preservative should be effective at your formulation pH and should not interact negatively with the peptide
Now, I opt to get it through other sources: Vega Complete Plant Based Protein Powder Vitamin B complex, which is going to give you all the variations (again with pills quality is HUGE!) From all of my research, this is actually pretty normal
Include 2 ml of Thiamine (B1) 100mg/ml, Riboflavin (B2) 2mg/ml, Niacinamide (B3) 100mg/ml, Dexpanthenol (B5) 2mg/ml, Pyridoxine (B6) 2mg/ml and Hydroxocobalamin (B12)
If you have a condition like chronic fatigue syndrome, anemia, or nerve damage (often related to diabetes or alcohol use), more frequent injections may be part of your treatment plan, but only under a licensed professionals care