how much b12 is in injection INJECTIONS Cyanocobalamin (B12) Injection 1000 mcg/mL,

Cyanocobalamin is the most used and given in doses from 100 to 1,000 mcg

Alternative Nutritional Approaches For LHON patients needing Vitamin B12, there are other options

Gonzlez-Guerra JL, Castilla-Cortazar I, Aguirre GA, Muoz U, Martn-Estal I, vila-Gallego E, Granado M, Puche JE, Garca-Villaln A (2017a) The sole partial insulin-like growth factor (IGF-1) deficiency reduces heart contractibility, angiotensin II sensibility, and alters gene expression of structural and functional cardiac proteins Gonzlez-Guerra JL, Castilla-Cortazar I, Aguirre GA et al (2017b) Partial IGF-1 deficiency is sufficient to reduce heart contractibility, angiotensin II sensibility, and alter gene expression of structural and functional cardiac proteins

Less tingling Numbness or pins and needles in your hands and feet begin to ease