ate IV 752 40,830 Concept RX, Inc. Phendimetrazine (also known as Bontril) ra 184 14,250 Concept RX, Inc Phentermine IV 8,585 671,910 Concept RX, Inc Benzphentamine III ... 50 4,170 Concept RX, Inc Diethylpropion IV 40 2,910 Concept RX, Inc Sibutramine Hydrochloride monohydrate