Listen to DavidHC above.

I personally can say symptoms WILL improve. Benfotiamine is also very safe in high doses. The body will discard what it doesn't need. Taken in combination with R-Lipoic acid I have gotten great relief and been able to cheat on occasion and have a small treat without having to pay for it with a 4 day flare up. If it's working then I believe your body needs it regardless of what a blood test says which is merely a snapshot.

I like the Life Extension brand of both of the aforementioned products. Doctor's Best is also good, but Life Extension offers more potent dosage which is what helps me. It should definitely help the numbers go back up.

In the end, its better to rely on Supplements than it is Pharmaceuticals if you can. Even though it can be a bit costlier.