--is merely a combination of methylated B-vitamins, including methylcobalamin B12 and methylfolate.

The components of Metanx can be bought over the counter without prescription--and given the need to take methylcobalamin B12 alone, without anything else to interfere with absorption, that may be a better option for some--but if one's insurance will allow one to get Metanx cheaply, on could certainly try it as an option. If not, it's components are available, as I said, and not too expensively.