Oh, the only only supplement I take that is one of those things they don't want people to know about is a type of B vitamin called benfotiamine. They must really not want you to know about this one, because almost no one has heard about it. It's something they came up with to treat alcoholic nerve damage and then later found out that it prevents the damage to your nerves from the excessive glucose levels seen in diabetics. That's a win/win for me! I've been diabetic for 25 years and don't have a single complication and my dong still functions perfectly. Knock on "wood."