FDA Orange Book
Generic for Didrex
Didrex contains benzphetamine. Orange Book status for every listed strength, the approved generic makers, and the listed patents and exclusivities.
Source: FDA Orange Book data file dated 2026-10-09. Publisher page
Yes. The generic name for Didrex is benzphetamine. 4 companies hold an active FDA approval (ANDA) for a generic version in the Orange Book. Therapeutic equivalence codes: AA.
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Didrex products in the Orange Book
| Form and route | Strength | Brand status | Brand TE | Active generics | Generic TE codes |
|---|---|---|---|---|---|
| tablet, oral | 25MG | Discontinued | None | 1 | None |
| tablet, oral | 50MG | Discontinued | None | 4 | AA |
NDA 012427, held by PFIZER INC. Active generics are ANDA products in the Orange Book prescription list with the same ingredient, dosage form, route and strength.
Approved generic benzphetamine
| Company | ANDA | TE code | Approved | Strengths |
|---|---|---|---|---|
| KVK TECH INC | 090968 | AA (A-rated, therapeutically equivalent) | July 20, 2010 | 50MG |
| CHARTWELL SCHEDULED LLC | 090473 | None (No TE code listed) | September 15, 2010 | 25MG, 50MG |
| AVET LIFESCIENCES LTD | 202061 | AA (A-rated, therapeutically equivalent) | January 27, 2012 | 50MG |
| EPIC PHARMA LLC | 090346 | AA (A-rated, therapeutically equivalent) | December 15, 2015 | 50MG |
Questions
Is there a generic for Didrex?
Yes. The generic name for Didrex is benzphetamine. 4 companies hold an active FDA approval (ANDA) for a generic version in the Orange Book. Therapeutic equivalence codes: AA.
What is the generic name for Didrex?
The active ingredient in Didrex is benzphetamine, per the FDA Orange Book.
What does a therapeutic equivalence code mean?
In the Orange Book, codes that start with A (such as AB) mean FDA considers the product therapeutically equivalent to the reference drug. Codes that start with B mean FDA does not, at this time, consider the product therapeutically equivalent.