You are not going to find Benfotiamine at a GNC most likely.
If they do have it they will charge an arm and a leg for it.

If you are leary of ordering on the internet, get a rechargeable charge card for internet purchases. That way if something is stolen from you the amount of $$ on it is very small and not a major issue.

We keep one charge card only for the internet, for this reason.

Some very large health food stores may have a section with Doctor's Best. Call around your area and see if that is likely.
Doctor's Best is a common brand in quality health food stores.
But buying locally can be up to 50% more expensive.

I get my Doctor's Best vitamins from Amazon now. Free shipping over $25.

You can start with plain old thiamine which is very very inexpensive. That is what I did. It is yeasty smelling and will make your urine have a strange odor. But it is sold everywhere, even grocery stores with mini pharmacies have it. The downside of this route is it is excreted in the urine very quickly whereas the Benfotiamine is not.

Starting Benfotiamine is 300mg a day for a month, then 150mg daily thereafter.
http://www.amazon.com/Doctors-Best-B...s=benfotiamine

Thiamine is 100 to 300mg a day in divided doses.

This is my Benfotiamine post:
http://neurotalk.psychcentral.com/post653193-4.html