FDA Orange Book
Generic for Calan SR
Calan SR contains verapamil. 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 Calan SR is verapamil. 4 companies hold an active FDA approval (ANDA) for a generic version in the Orange Book. Therapeutic equivalence codes: AB.
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Calan SR products in the Orange Book
| Form and route | Strength | Brand status | Brand TE | Active generics | Generic TE codes |
|---|---|---|---|---|---|
| tablet, extended release, oral | 120MG | Discontinued | None | 4 | AB |
| tablet, extended release, oral | 180MG | Discontinued | None | 3 | AB |
| tablet, extended release, oral | 240MG | Discontinued | None | 4 | AB |
NDA 019152, 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 verapamil
| Company | ANDA | TE code | Approved | Strengths |
|---|---|---|---|---|
| STRIDES PHARMA INTERNATIONAL AG | 075072 | AB (A-rated, therapeutically equivalent) | May 25, 1999 | 120MG, 240MG |
| GLENMARK PHARMACEUTICALS LTD | 078906 | AB (A-rated, therapeutically equivalent) | September 17, 2009 | 240MG |
| GLENMARK PHARMACEUTICALS LTD | 090700 | AB (A-rated, therapeutically equivalent) | August 3, 2011 | 120MG, 180MG |
| CADILA PHARMACEUTICALS LTD | 206173 | AB (A-rated, therapeutically equivalent) | November 14, 2022 | 120MG, 180MG, 240MG |
| ZYDUS LIFESCIENCES GLOBAL FZE | 219252 | AB (A-rated, therapeutically equivalent) | November 24, 2025 | 120MG, 180MG, 240MG |
Questions
Is there a generic for Calan SR?
Yes. The generic name for Calan SR is verapamil. 4 companies hold an active FDA approval (ANDA) for a generic version in the Orange Book. Therapeutic equivalence codes: AB.
What is the generic name for Calan SR?
The active ingredient in Calan SR is verapamil, 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.