There are 7 Harsh Expellants
Ba Dou Croton Seed Crotonis Fructus Croton Seed 
Gan Sui Kansui Root Radix Euphorbiae Kansui Kansui Root 
Hong Da Ji Knoxia Root Radix Knoxiae Knoxia Root 
Jing Da Ji Peking Spurge Root Radix Euphorbiae Pekinensis Peking Spurge Root Qian Niu Zi Morning Glory Seeds or Pharbitis Semen Pharbiditis Morning Glory Seeds or Pharbitis 
Shang Lu Poke Root or Phytolacca Radix Phytolaccae Poke Root or Phytolacca 
Yuan Hua Genkwa Flower Flos Daphnis Genkwae Genkwa Flower