NuPhedrine is a diet pill with 3 main ingredients:
Hoodia Gordonii (appetite suppressant)
Advantra-Z (brand name of the fat burner.... aka synephrine)
Slimaluma (herb)
Essentially the pill is supposed to work by suppressing your appetite throughout the day, and boosting your metabolism with the synephrine.
According to the website, the Hoodia Gordonii they use is certified as coming from South Africa.