What Is the Current Regulatory Status in the U

What is the current regulatory status in the U.S. of ephedrine-containing dietary supplements?

A) Banned
B) Those containing less than 10 mg of ephedrine are legal in most states but higher doses cannot be sold
C) Those containing less than 30 mg of ephedrine are legal in most states but higher doses cannot be sold
D) Can be sold with no restrictions on dose