Anaphylactic shock and death have been reported after parenteral vitamin B 12 administration
I have no hard evidence , just what Ive read on this forum for over 9 years
Minimal Side Effects & High Safety Profile Compared to many pharmaceuticals, peptide therapy has virtually no known side effects
no lethal or acutely toxic dose identified across roughly a 3,300x range (6 mcg/kg to 20 mg/kg) Coagulation: rat male aPTT shortened ~10% at 1 and 4 mg/kg, dog male aPTT prolonged ~2025%, both reversible
Concentration = vial mcg / water mL Dose volume = target dose mcg / concentration U-100 units = dose volume mL x 100 Semaglutide 5 mg vial with 2 mL example A 5 mg semaglutide vial mixed with 2 mL gives a concentration of 2.5 mg/mL, or 2,500 mcg/mL
Composition Each mL of sterile aqueous solution contains Thiamine Hydrochloride (B1) 100 mg Riboflavin (B2) (as Riboflavin 5'-Phosphate Sodium) 5 mg Niacinamide 100 mg Pyridoxine Hydrochloride (B6) 10 mg d-Panthenol 10 mg Cyanocobalamin (B12) 100 mcg by AgriLabs