A couple of questions about the Methylcobalamin. Are they sublingual? Does it state on the bottle/packet what fillers etc. are in the product?

Although the compounded products may be much dearer at least we know that the quality is excellent with good bioavailability. I guess it's worth trying. Will you be able to get your levels done again after using the iherb product for awhile to see if they are holding?

Do you have iherb's url although I can probably find it easily enough?