What this pack is
CARDIZEM LA is the brand name in this record; diltiazem hydrochloride is the generic name. Read both together with the dosage form (oral tablet).
PACK CHECK · MARKET FIRST
CARDIZEM LAGeneric namediltiazem hydrochloride
How this medicine works
The current U.S. label classifies CARDIZEM LA as a nondihydropyridine calcium-channel blocker. This helps explain the class and why heart rate, conduction and the complete medicine list need review, but does not predict individual blood pressure, heart rate, suitability, dose or a combination plan.
Read source: United States ↗reviewed 2026-08-23More about its action and precautions →Check the market, names, dosage form and route together
A medicine may use different brand names across markets. Keep the market, brand, generic name, dosage form and route together; one matching field does not prove that two packs are the same or interchangeable.
Open the complete product-identity record
Use these fields when the pack, market name or package image needs closer checking. They are evidence boundaries, not substitution instructions.
- International brand name
- CARDIZEM LA
- Generic name
- diltiazem hydrochloride
- Dosage-form class
- Diltiazem hydrochloride extended-release oral tablets: 120 mg, 180 mg, 240 mg, 300 mg, 360 mg and 420 mg per tablet (as listed in this U.S. public label)
- Route
- Oral
- Package-image status
- A source-linked public label image is available below
No source-verifiable mainland-China trade-name cue has been established for this record. This does not establish whether the medicine exists, is approved or is available in mainland China. Check pack text and current CDE/NMPA records item by item.
FOR EVERYDAY QUESTIONS
After the leaflet, continue with the question you still need to check
What this page can show
This is a source-traceable public record. It helps you read the product identity and its listed source documents; each market still needs its own current record check.
What to bring to the next conversation
Bring the actual pack, the label or prescription, and a complete medicine list when you speak with a pharmacist or clinician.
NEXT SAFE STEP
Choose the next safe check
A question about changing, combining or splitting?Put the exact packs on one list before a pharmacist or prescriber checks the full context.Open the family medicine list →A question about cost, reimbursement or availability?First lock the market, exact presentation and date. Use local official reimbursement, hospital or pharmacy channels for a current answer rather than a web estimate.Open regulator and market-record entry points →Unsure about a pack or a cross-border product?Photo reading can return possible record matches only. Check the actual product against the current regulator record for its market.Identify pack text locally →Saw a recall, approval or procurement headline?Open the original publisher, then match its product, market and date. Do not make a stop or switch decision from a headline.Read primary-source news →
PRODUCT PRESENTATION IDENTITY
Strength, pack and device identity
Package strength is not an individual dose. These fields help identify the exact labelled product; they do not calculate how much, how often, a missed-use action, splitting, switching or conversion.
6 source-backed strength, pack or device records — open the full list
First match the market, dosage form and labelled amount on the pack in hand. The number of tablets, sachets or devices in a pack is not a personal dose or schedule.
United States label · Current U.S. DailyMed public label (updated 11 Nov 2025)
120 mg labelled per tablet; 90-tablet bottle (U.S. label)
- Product code
- NDC 0187-2045-90
- Form and route
- diltiazem hydrochloride extended-release oral tablet · oral (label product-identity field)
- Container
- bottle
- Listing review
- Current label display and NDC Directory listing reviewed 2026-08-23; actual marketing, stock and availability are not established.
- diltiazem hydrochloride
- 120 mg120 mg labelled per tablet; not an individual's tablet count, frequency or conversion instruction
United States label · Current U.S. DailyMed public label (updated 11 Nov 2025)
180 mg labelled per tablet; 90-tablet bottle (U.S. label)
- Product code
- NDC 0187-2046-90
- Form and route
- diltiazem hydrochloride extended-release oral tablet · oral (label product-identity field)
- Container
- bottle
- Listing review
- Current label display and NDC Directory listing reviewed 2026-08-23; actual marketing, stock and availability are not established.
- diltiazem hydrochloride
- 180 mg180 mg labelled per tablet; not an individual's tablet count, frequency or conversion instruction
United States label · Current U.S. DailyMed public label (updated 11 Nov 2025)
240 mg labelled per tablet; 90-tablet bottle (U.S. label)
- Product code
- NDC 0187-2047-90
- Form and route
- diltiazem hydrochloride extended-release oral tablet · oral (label product-identity field)
- Container
- bottle
- Listing review
- Current label display and NDC Directory listing reviewed 2026-08-23; actual marketing, stock and availability are not established.
- diltiazem hydrochloride
- 240 mg240 mg labelled per tablet; not an individual's tablet count, frequency or conversion instruction
United States label · Current U.S. DailyMed public label (updated 11 Nov 2025)
300 mg labelled per tablet; 90-tablet bottle (U.S. label)
- Product code
- NDC 0187-2048-90
- Form and route
- diltiazem hydrochloride extended-release oral tablet · oral (label product-identity field)
- Container
- bottle
- Listing review
- Current label display and NDC Directory listing reviewed 2026-08-23; actual marketing, stock and availability are not established.
- diltiazem hydrochloride
- 300 mg300 mg labelled per tablet; not an individual's tablet count, frequency or conversion instruction
United States label · Current U.S. DailyMed public label (updated 11 Nov 2025)
360 mg labelled per tablet; 90-tablet bottle (U.S. label)
- Product code
- NDC 0187-2049-90
- Form and route
- diltiazem hydrochloride extended-release oral tablet · oral (label product-identity field)
- Container
- bottle
- Listing review
- Current label display and NDC Directory listing reviewed 2026-08-23; actual marketing, stock and availability are not established.
- diltiazem hydrochloride
- 360 mg360 mg labelled per tablet; not an individual's tablet count, frequency or conversion instruction
United States label · Current U.S. DailyMed public label (updated 11 Nov 2025)
420 mg labelled per tablet; 90-tablet bottle (U.S. label)
- Product code
- NDC 0187-2050-90
- Form and route
- diltiazem hydrochloride extended-release oral tablet · oral (label product-identity field)
- Container
- bottle
- Listing review
- Current label display and NDC Directory listing reviewed 2026-08-23; actual marketing, stock and availability are not established.
- diltiazem hydrochloride
- 420 mg420 mg labelled per tablet; not an individual's tablet count, frequency or conversion instruction
PUBLIC LABEL IMAGE
Appearance and package-text clues
This current public-label package panel helps check the brand, generic name, strength and dosage-form clues only. It does not authenticate a product in hand or establish originator status, availability, sale eligibility, another package or another market.
Open the public label source ↗LABEL READING · NOT A PRESCRIPTION
CARDIZEM LA label reading: mg on an extended-release tablet identifies this exact product first
Reading level: drug-specific label reading. This record has been expanded around its dosage form or a higher-risk reading question; the current target-market label and professional review still apply.
This module uses the current U.S. DailyMed public label to check CARDIZEM LA, diltiazem hydrochloride, extended-release oral tablets, labelled per-tablet amount, a specific NDC and bottle. It does not provide anyone's tablet count, timing, missed-use handling, splitting, stopping, conversion from another diltiazem product or co-use answer.
- 120, 180, 240, 300, 360 and 420 mg distinguish extended-release tablets in this U.S. label; they are not a webpage formula for ‘how many each day’, adding strengths, halving, make-up use or conversion.
- The label states that this extended-release tablet is swallowed whole and not chewed or crushed. That product-specific wording does not automatically apply to another diltiazem form, extended-release tablet, capsule or another-market product; swallowing difficulty, splitting or form-change questions need pharmacist or prescriber review for the actual product.
- The label's ‘switching to CARDIZEM LA’ wording is prescribing information, not a self-service conversion calculator. A shared diltiazem name, similar mg number, or heart/blood-pressure context does not prove products can be self-substituted, combined, alternated or adjusted.
- The label flags review cues with medicines that may affect cardiac conduction or contractility, beta-blockers, digitalis and multiple metabolism-related products. Especially for older people or people using several medicines, take all actual packs, prescription labels, OTC products and supplements together to a pharmacist or prescriber; do not self-stop, add, time-separate or change any medicine.
PHARMACOVIGILANCE · OFFICIAL ROUTES
Check safety information in the right market
Start with the public label or product record linked to this dossier, then use the official safety routes below for the market that applies to the medicine in hand.
Match five details before using a safety record
- Brand and generic nameBoth must match the medicine named by the record.
- Dosage form and strengthTablet, capsule, injection, inhaler, patch and eye drop are not interchangeable.
- Market and notice dateA record applies only to the country or region and date it names.
- Lot, pack and manufacturerRecord these only when the official notice specifically names them.
- Current product informationA historical record may have been superseded by the current label.
This checklist only helps organise the right question. It does not create a personal conclusion about stopping, switching, dose, combination or suitability.
This dossier’s product-level source checkU.S. National Library of Medicine DailyMed · United States · Public medicine label · 2026-08-23
This dossier’s publicly accessible product-level route has been checked individually. It does not mean that real-time alerts in every country or region have been searched, or that the medicine has or does not have a current risk.
Markets actually represented by the reviewed product documents
- United States · 1
This is a document-coverage summary, not a claim that the medicine is authorised, supplied, interchangeable or actively monitored in every listed market today.
This record’s label or product-record routeDailyMed (NLM): current U.S. CARDIZEM LA diltiazem hydrochloride extended-release-tablet public label (Bausch Health US; updated 11 Nov 2025) ↗reviewed 2026-08-23
This is not a conclusion that the medicine has no risk, warning, recall or newer notice in another market. Start with the checked product-level label above, then use the official market gateways below for the product in hand.
See the reviewed safety-record directory →Global official safety gateways
- NMPA Centre for Drug Reevaluation · Mainland ChinaPrimary NMPA Drug Evaluation Centre gateway for drug-vigilance bulletins, safety notices and adverse-reaction monitoring. Exact products still require checking approval number, dosage form, strength, authorisation holder and notice date item by item.Drug-vigilance bulletins and safety notices ↗reviewed 2026-08-22
- FDA · United StatesPrimary FDA pages for important new safety issues, labelling changes and risk communications.Drug Safety Communications ↗reviewed 2026-08-22
- FDA MedWatch · United StatesU.S. MedWatch safety-information and reporting gateway; a report does not itself establish causality.Safety information and serious-problem reporting ↗reviewed 2026-08-22
- EMA · European Union / European Economic AreaOfficial EU gateway for pharmacovigilance, suspected adverse-reaction reports and PRAC safety assessment.Pharmacovigilance overview and EudraVigilance ↗reviewed 2026-08-22
- MHRA · United KingdomPrimary UK MHRA medicine-safety updates for professionals and the public.Drug Safety Update ↗reviewed 2026-08-22
- PMDA · JapanPMDA’s English official safety gateway; exact products still require checking against the Japanese product page and current documents.Medicine safety information ↗reviewed 2026-08-22
- MFDS · Republic of KoreaMFDS’s primary index for medicine safety letters in the Republic of Korea. The original notices are in Korean and must be read against the named product, dosage form, market and date; they do not automatically apply in another market or decide an individual case.Medicine safety letters ↗reviewed 2026-08-22
- HSA · SingaporeHSA’s public Singapore gateway for suspected adverse-event reporting and medicine-safety information. A report does not itself establish individual causality; exact products still require checking Singapore registration status, dosage form, strength, date and current product information.Adverse-event reporting and medicine-safety information ↗reviewed 2026-08-22
- Health Canada · CanadaHealth Canada’s public MedEffect gateway for medicine and health-product advisories, warnings, recalls, reporting and safety information. Exact products still require checking market, dosage form, strength, notice date and lot item by item.MedEffect Canada: advisories, warnings and recalls ↗reviewed 2026-08-22
- TGA · AustraliaPrimary Australian TGA safety alerts, advisories and monitoring information for therapeutic products.Medicine safety alerts ↗reviewed 2026-08-22
- Swissmedic · SwitzerlandOfficial Swissmedic gateway for pharmacovigilance, signal assessment and suspected adverse-reaction reporting; a report or signal does not itself confirm individual causality.Pharmacovigilance and suspected adverse-reaction reporting ↗reviewed 2026-08-22
- Medsafe · New ZealandNew Zealand Medsafe gateway for public and professional medicine safety communications and archives; older notices may have been superseded by current product information.Medicine safety communications ↗reviewed 2026-08-22
- SAHPRA · South AfricaSAHPRA’s safety-information, alerts and pharmacovigilance gateway for the public and professionals in South Africa. An official alert does not itself mean a product is unsafe in every circumstance; exact products still require checking South African registration status, dosage form, strength, notice date and current product information.Medicine safety information, alerts and pharmacovigilance ↗reviewed 2026-08-22
- WHO · GlobalWHO’s cross-market safety-alert archive; every historical notice must be read against its date, named product and market.Medicine and vaccine safety-alert archive ↗reviewed 2026-08-22
- Anvisa · BrazilAnvisa’s primary Brazilian pharmacovigilance gateway for alerts, bulletins, risk communication and VigiMed reporting. Exact products still require checking Brazilian authorisation status, dosage form, strength and notice date item by item.Pharmacovigilance, alerts and VigiMed ↗reviewed 2026-08-22
This card brings together the medicine-specific product route and 15 market-level official vigilance gateways. It does not mean real-time alerts for this medicine have been searched in every country or region, or that the medicine has a new alert, recall or risk conclusion. Match brand, generic name, dosage form, strength, market and notice date item by item; do not self-stop, switch, increase or reduce use from a headline.
For severe or rapidly worsening symptoms, suspected overdose, a severe allergic reaction, loss of consciousness or another emergency, use local emergency services. Do not wait for an online alert search or change a medicine from this page.
PRIVATE FAMILY LIST
Bring this record into a local medicine list
Only the brand, generic name, dosage form and route are added, and they stay in this browser. Copy strength, label directions, start/stop history and any concern from the actual pack; this tool does not calculate a dose or decide combination, switching or stopping.
Add to the family medicine list →PACK · LABEL · MEDICINE LIST
Six checks for this medicine pack
Use this card to organise questions about CARDIZEM LA (diltiazem hydrochloride). Keep the exact pack, its current label and the full medicine list together.
Identify the exact product
CARDIZEM LA is the brand in this record and diltiazem hydrochloride is the active-ingredient name. Check both with the dosage form (Diltiazem hydrochloride extended-release oral tablets: 120 mg, 180 mg, 240 mg, 300 mg, 360 mg and 420 mg per tablet (as listed in this U.S. public label)) and the market on the actual pack.
Read the labelled strength in context
mg, mcg, mg/mL or a percentage describes the labelled amount in one tablet, capsule, measured volume, spray or other unit. It is not an answer to how many units a person should take.
Check before splitting or opening
Before splitting, crushing, chewing or opening anything, find an explicit instruction for this exact product in its current label and ask a pharmacist. A score line or a previous pack is not enough by itself.
Put every product on one list
Include prescriptions, over-the-counter products, eye drops, creams, vitamins, minerals, herbs and supplements. A pharmacist or prescriber needs the whole list before any combination, alternation, switch or stop is considered.
Ask a specific pharmacogenetics question
Ask which medicine, which gene and what clinical decision a result could change. A gene–drug association does not mean broad genetic testing is needed for everyone and must not be used to change treatment without professional review.
Know when to seek urgent help
For a suspected overdose, a severe allergic reaction, fainting or difficulty breathing, use the local emergency or poison-information service now. Do not wait for a website reply or alter several medicines to test what caused it.
This card does not calculate a dose, decide whether medicines can be combined, or replace a clinician or pharmacist. Market-specific current labels and the person's full context still need review.
HOW IT WORKS · NOT A TREATMENT PLAN
How diltiazem works: calcium-channel blockade explains a mechanism, not an individual plan
- ‘Calcium-channel blocker’ is a class and pathway clue, not a conclusion that every blood-pressure or heart medicine can be used together. Drug class, dosage form, prior reactions, heart-rate/conduction context, kidney/liver function and the complete medicine list need item-by-item professional review.
- A shared heart-related use or mechanism cue with a beta-blocker, digoxin or another heart-rate-related medicine does not establish same-day combination, alternation, substitution or milligram conversion.
- Mechanism reading cannot replace symptom assessment. With fainting, chest discomfort, pronounced palpitations, breathing difficulty, severe dizziness or another acute concern, use local urgent and medical care pathways rather than self-adjusting from a webpage.
SOURCE EVIDENCE REGISTER
Source evidence map
Every public link is labelled with its market, document status and document type. A historical public record is not a current label, and an official lookup entry is not a product-specific record.
SOURCE-TRACEABLE ARCHIVE
CARDIZEM LAdiltiazem hydrochloride
This page includes an exact current U.S. public-label package panel for CARDIZEM LA, alongside documentary primary-source material. It helps check product identity, but does not itself establish originator status, product quality, availability or sale eligibility.
DOCUMENT TIMELINE
Document timeline
Initial U.S. approval year listed in the public label
The current U.S. DailyMed public label for CARDIZEM LA lists Initial U.S. Approval: 1982. This year only locates this U.S. label history; it does not establish approval, supply, sale eligibility, originator/generic relationship, interchangeability or individual suitability in Mainland China or another market.
DailyMed (NLM): current U.S. CARDIZEM LA diltiazem hydrochloride extended-release-tablet public label (Bausch Health US; updated 11 Nov 2025) ↗Current U.S. DailyMed public label updated
This dossier uses the current DailyMed public label to check CARDIZEM LA, diltiazem hydrochloride extended-release tablets, labelled 120–420 mg per tablet, the NDCs for 90-tablet bottles and a 120 mg bottle panel. It does not establish actual marketing, stock, purchase, individual tablet count, frequency, splitting, adjustment or switching.
DailyMed (NLM): current U.S. CARDIZEM LA diltiazem hydrochloride extended-release-tablet public label (Bausch Health US; updated 11 Nov 2025) ↗
MARKET SCOPE
Market-record boundary
United States
Current public label, six 90-tablet bottle identities and one exact bottle panel linkedThis page records specific 90-tablet bottle NDCs for CARDIZEM LA extended-release tablets at 120, 180, 240, 300, 360 and 420 mg and displays the 120 mg, NDC 0187-2045-90 label panel. It does not authenticate a product or establish actual marketing, stock, purchase, individual tablet count, frequency, stopping, switching or interchangeability.
Mainland China, EU, Japan and other markets
Current market record not establishedNo local trade name, approval, packaging, supply, sale eligibility, originator/generic relationship or interchangeability is inferred from the U.S. label, SPL, NDA, NDC, English brand, package image or label holder; every market requires separate checking against current local regulatory material.
How to read this record
Read each document in its stated market, date and dosage-form context. A historical record is not a current label and does not support individual medical, substitution or purchasing conclusions.
Keep international and mainland China records separate
This page has a U.S. public history/regulatory archive but no mainland China record for this specific product. That does not establish whether the medicine exists, is approved or is available in mainland China. Verify product identity, dosage form, strength, holder and the current label item by item.
RECORD FAQ
Record questions
Can 120, 180, 240, 300, 360 and 420 mg be self-exchanged by milligram number, bottle quantity or shared diltiazem name?
No. They are distinct extended-release tablet identities listed in this U.S. label. This page does not turn product numbers into individual tablet count, splitting, chewing/crushing, make-up use, same-day combination, alternate-day use, substitution or adjustment rules; take the actual pack, current prescription and complete medicine list to a pharmacist or prescribing team for review.
Why does this page emphasise ‘swallow whole’ but not say whether I can split it or change to another diltiazem product?
The current label states that this exact extended-release tablet is swallowed whole and not chewed or crushed; however, splitting, swallowing difficulty, missed use, dosage-form changes and conversion involve the actual product and individual prescription. A webpage should not turn prescribing conversion text into self-service instructions; have a pharmacist or prescribing team confirm from the actual pack and complete medicine list.
READ NEXT
Related reading
Evidence status
The listed links are public sources selected for traceability. They must be rechecked against the current target-market record before any use beyond reading and research.