FDA Orange Book
Generic for Celontin
Celontin contains methsuximide. 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 Celontin is methsuximide. 1 company holds an active FDA approval (ANDA) for a generic version in the Orange Book. Therapeutic equivalence codes: AB. Generics match 1 of the 2 Celontin products the Orange Book lists.
Run it in Rivvi
Map Celontin and your other top fills to their generics
Every strength in RxNorm, with brands that have no generic flagged.
Build the mapFree to start. Opens Rivvi, the AI workspace for healthcare teams.
Celontin products in the Orange Book
| Form and route | Strength | Brand status | Brand TE | Active generics | Generic TE codes |
|---|---|---|---|---|---|
| capsule, oral | 150MG | Discontinued | None | 0 | None |
| capsule, oral | 300MG | Marketed (Rx) | AB | 1 | AB |
NDA 010596, held by PARKE DAVIS DIV WARNER LAMBERT CO. Active generics are ANDA products in the Orange Book prescription list with the same ingredient, dosage form, route and strength.
Approved generic methsuximide
| Company | ANDA | TE code | Approved | Strengths |
|---|---|---|---|---|
| NOVITIUM PHARMA LLC | 217213 | AB (A-rated, therapeutically equivalent) | May 1, 2023 | 300MG |
Celontin NDC codes
Questions
Is there a generic for Celontin?
Yes. The generic name for Celontin is methsuximide. 1 company holds an active FDA approval (ANDA) for a generic version in the Orange Book. Therapeutic equivalence codes: AB. Generics match 1 of the 2 Celontin products the Orange Book lists.
What is the generic name for Celontin?
The active ingredient in Celontin is methsuximide, 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.