DIDREX (benzphetamine hydrochloride) is still marketed by Pfizer
U.S.P.G. (originally manufactured by Upjohn) National
drug Code
00009-0024-01 tablets of 50 mg. size stocked to USA pharmacies in bottles of 100 count. It is a Schedule III controlled substance, that can still be authorized with refills. The AWP (Average Wholesale Price) is $176.90 with a DP (Deep
DISCOUNT) offered to USA pharmacies for $147.42. It is also available in 500 count bottles NDC# 00009-0024-02 with a AWP of $884.52, and a DP offered again, to USA pharmacies, for $737.10 for a five hundred pills (50 mg. each) in a pharmacy bottle. The C-III anti-obesity medication is not listed in the 2007, 2008, 2009, or 2010 Physicians Desk Reference, by brand, or generic name, but it is listed in the Martindale Complete
drug Reference 36th edition 2009 ISBN #978-0-85369-840-1 (Pharmaceutical Press London England) and the REDBOOK
"Pharmacy's Fundamamental Reference" 2009 edition 113th year of publication by PDR Inc. ISBN # 978-1-56363-706-3 (page 390).
Benzphetamine Hydrocloride is only manufactured & sold in the USA, and is not listed in the Martindale Extra Pharmacopoeia which carries a list of all ethical pharmaceuticals in 39 other industrialized countries of the modern world. I have not seen it listed on any NROP, ROP's, of course, any "IOP's" since it is a USA only product.
The last time I saw any "Didrex" the 50mg. pill was still peach, round, imprinted with Didrex 50, and scored. I haven't seen any of the yellow round Didrex 25 (mg) scored pills since the early 1990's.