My husband has PN in his toes and takes the usual 2 capsules of metanx daily. They are so expensive that we are looking for a supplement recommendation if possible. I've read other thresds/post by you and i'm just a little confused. I guess I'd just like to know "which suplements, dosage, frequency and where to purchase the purest, quality contolled supplements" All the discussion of p5p and other products made me wonder which we should get. Thank you for helping poeple with this issue