Which of the following is true of gamma hydroxybutyrate (GHB)?
a. GHB is a legal dietary supplement
b. GHB has been approved for treatment of narcolepsy
c. GHB is a stimulant drug
d. tolerance and dependence to GHB have not been reported
e. all of these are true
Question 2
Which of the following is used as a sleeping aid?
a. St. John's wort
b. Ginkgo biloba
c. Ma Huang (Ephedra)
d. Valerian
e. all of the above