My podiatrist also recommended this product. I did a thorough search and suggest that you do the same. This is essentially a vitamin B product that is overpriced because it is purchased via prescription. There were about 10 similar products when I did my search. Do your homework and you will find that you can buy a similar product on Amazon for less than $20. By the way, GRAS (generally regarded as safe) vitamins etc. are not regulated by the FDA and therefore don't need a prescription. Some doctors feel that their clients are always looking for a prescription, so this product fits that bill.

Metanx is just a B vitamin supplement. There should be no need to stop it. We all need B vitamins. Hope you are not overpaying for a prescription drug when you can buy B vitamins at any drug store (in the USA). Here is what it contains:
Metanx is a prescription medical food made by Alfasigma that contains L-methylfolate (as Metafolin, a calcium salt of vitamin B9), methylcobalamin (vitamin B12) and pyridoxal 5'-phosphate (vitamin B6). It is a vitamin B supplement. Metanx is indicated for the dietary management of peripheral neuropathy (i.e. DPN).[1]