Product Information
TIADYLT ER 420 MG CAPSULE is a generic product labeled by Zydus Pharmaceuticals (USA) Inc., priced at $0.9940 per EA under NDC 68382075016. Its NADAC has been published 341 times since Mar 25, 2020.
FDA first approved this application on Aug 11, 2017. Its Orange Book therapeutic-equivalence code is AB4 — FDA rates it therapeutically equivalent to (substitutable for) its reference product.
Strength
420 mg/1
Manufacturer
Zydus Pharmaceuticals (USA) Inc.NDC
68382075016
Classification
Generic
Dosage Form
CAPSULE, EXTENDED RELEASE
Route
ORAL
Effective Date
9/23/2026
Active Ingredients
DILTIAZEM HYDROCHLORIDEApproval Type
Generic (ANDA)
FDA Application
ANDA206641FDA Approved
8/11/2017
TE Code
AB4
On Market Since
11/8/2017
Pharmacological Classes
Price Statistics
The NADAC for TIADYLT ER 420 MG CAPSULE has been published 341 times since Mar 25, 2020, and over the history we have for it it has declined 11.6%. The table below summarizes its recorded NADAC range and movement.
| Current price | $0.9940 per EA |
|---|---|
| All-time high | $1.3060 (Sep 16, 2020) |
| All-time low | $0.8316 (Nov 20, 2024) |
| 52-week high | $1.0513 |
| 52-week low | $0.9881 |
| Median price | $1.0429 |
| Average price | $1.0565 |
| Largest weekly change | +24.4% (Feb 17, 2021) |
| Weeks tracked | 341 |
| Tracking since | Mar 25, 2020 |
Generic Alternatives
The matcher finds 1 manufacturer offering a NADAC-published product with this drug's active ingredient and strength in a comparable dosage form (cheapest from each manufacturer, up to 10 shown below). Switching to the cheapest would cut per-unit acquisition cost by roughly 0% at current NADAC. These are candidates to verify clinically, not guaranteed substitutes — see our generic drug prices guide.
Related Drugs
Same classification
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Manufacturer
Zydus Pharmaceuticals (USA) Inc. manufacturer profile
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Drug market
diltiazem hydrochloride market comparison
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Therapeutic class
Calcium Channel Blocker class view
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Trend hub
Latest market trends
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Guide
Understanding NADAC pricing
Use the explainer when you need context on how CMS publishes NADAC and how to interpret the number on this page.
Frequently asked questions
What is the NADAC price of TIADYLT ER 420 MG CAPSULE?
The current National Average Drug Acquisition Cost (NADAC) for TIADYLT ER 420 MG CAPSULE, manufactured by Zydus Pharmaceuticals (USA) Inc., is $0.9940 per EA (NDC 68382075016), effective Sep 30, 2026.
How has the price of TIADYLT ER 420 MG CAPSULE changed over time?
Over the history we have for it, the NADAC for TIADYLT ER 420 MG CAPSULE has declined 11.6%. It has been tracked across 341 weekly CMS publications since Mar 25, 2020.
What are the highest and lowest recorded NADAC prices for TIADYLT ER 420 MG CAPSULE?
Since Mar 25, 2020, the NADAC for TIADYLT ER 420 MG CAPSULE has ranged from a low of $0.8316 (Nov 20, 2024) to a high of $1.3060 (Sep 16, 2020), with a median of $1.0429 per EA.
Are there cheaper alternatives to TIADYLT ER 420 MG CAPSULE?
Yes. 1 manufacturer publishes a NADAC-priced product with the same active ingredient and strength in a comparable dosage form. The lowest-priced option, DILTIAZEM 24HR ER 420 MG CAP, is $0.9897 per EA — about 0% below TIADYLT ER 420 MG CAPSULE.
Who manufactures TIADYLT ER 420 MG CAPSULE?
TIADYLT ER 420 MG CAPSULE (NDC 68382075016) is labeled by Zydus Pharmaceuticals (USA) Inc., and CMS classifies it as a generic product.