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First Aid Only Antacid calcium carbonate 420 mg Tablet, Chewable — NDC 00924-0287-01 package photo
Label image from the product's FDA listing (DailyMed) — may show a different pack size or an older label revision.

First Aid Only Antacid calcium carbonate 420 mg Tablet, Chewable — NDC 0924-0287-01 (Billing 00924-0287-01)

by Acme United Corporation · 20 PACKET in 1 BOX, UNIT-DOSE / 2 TABLET, CHEWABLE in 1 PACKET

This is a package of First Aid Only Antacid calcium carbonate 420 mg Tablet, Chewable from Acme United Corporation, marketed since Jun 2014 and currently FDA-listed. It is this product's only package size.

NDC 00924-0287-01
🏷️ FDA NDC (as labeled) 0924-0287-01 billing pads the labeler segment with a zero
OTC On market Non-controlled ⇄ Compare with another NDC
🗂️ FDA directory synced Oct 1, 2026 · this listing last changed Jul 24, 2026 · sources: openFDA · FDA label (DailyMed) · FDA Orange & Purple Book · First Databank · CMS NADAC, ASP, Medicare & Medicaid · RxNorm
📋 All sources & update times →

This page is curated, coded, and maintained by

Compiled from public FDA, CMS, DailyMed, NADAC, and related drug data sources. Editorial policy

⚠️
Other active recalls for Calcium Carbonate (different manufacturers) — 6 · tap to view
These affect other manufacturers’ products for the same ingredient — not necessarily the exact NDC on this page.
Class II · May 28, 2026 — Presence of foreign substance: small metallic particles in chewable tablets. (Guardian Drug Co. Inc.) · FDA recall D-0573-2026
Class II · May 28, 2026 — Presence of foreign substance: small metallic particles in chewable tablets. (Guardian Drug Co. Inc.) · FDA recall D-0561-2026
Class II · May 28, 2026 — Presence of foreign substance: small metallic particles in chewable tablets. (Guardian Drug Co. Inc.) · FDA recall D-0578-2026
Class II · May 28, 2026 — Presence of foreign substance: small metallic particles in chewable tablets. (Guardian Drug Co. Inc.) · FDA recall D-0568-2026
Class II · May 28, 2026 — Presence of foreign substance: small metallic particles in chewable tablets. (Guardian Drug Co. Inc.) · FDA recall D-0579-2026
Class II · May 28, 2026 — Presence of foreign substance: small metallic particles in chewable tablets. (Guardian Drug Co. Inc.) · FDA recall D-0560-2026
Each entry is an official FDA enforcement report — look up any recall number in the FDA recall database ↗

Identity & classification

Regulatory identifiers FDA, NLM and CMS codes for this package

FDA NDC (as labeled) 0924-0287-01
Product NDC 0924-0287
11-digit billing NDC 00924028701
RxCUI 313884
UNII H0G9379FGK
UPC 0092265070034
Application # M001
SPL Set ID 68902dda-a13c-ff2e-e053-2991aa0a06b1
Established class (EPC) Blood Coagulation Factor; Cations; Phosphate Binder
Mechanism of action Phosphate Chelating Activity
Physiologic effect Increased Coagulation Factor Activity
Chemical class Calcium; Divalent
DEA schedule Non-controlled
Marketing category OTC MONOGRAPH DRUG
Marketing status On market
FDA listing status Listed (active directory)
Marketing start 2014-06-15
Route ORAL
Dosage form TABLET, CHEWABLE
Substance CALCIUM CARBONATE
Quick answers
  • RxCUI (RxNorm): 313884
Why two NDCs? The FDA registers this code as 0924-0287-01 — a 4-4-2 layout, and that's what's printed on the package and shown on DailyMed. For insurance claims, every NDC is standardized to a uniform 11-digit 5-4-2 format by adding a zero to the labeler segment → 00924-0287-01. Same drug, same package — only the format differs.
Where does this data come from?
Identifiers from the FDA openFDA NDC Directory and Structured Product Labeling; RxCUI from RxNorm (NLM); GPI from Medi-Span; GCN / HIC / AHFS / legend from First Databank.

RxNorm drug class

This medicine belongs to the Calcium compounds class.

Drug family (ATC) Calcium compounds, Calcium
Where does this data come from?
Therapeutic classes from RxNorm RxClass (U.S. National Library of Medicine) — Established Pharmacologic Class (FDA), ATC drug family (WHO) and mechanism of action, matched by this product’s RxCUI.

Clinical

📖 What it is MedlinePlus · NLM

Calcium carbonate is a dietary supplement used when the amount of calcium taken in the diet is not enough. Calcium is needed by the body for healthy bones, muscles, nervous system, and heart. Calcium carbonate also is used as an antacid to relieve heartburn, acid indigestion, and upset stomach. It is available with or without a prescription. This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information.

Read the full MedlinePlus article ↗
📗 Our plain-language guide HelloPharmacist
  • Most often it's an antacid. It relieves heartburn, acid indigestion, sour stomach and upset stomach tied to those symptoms. A few supplement products have other uses, like bone sup...
  • What is calcium carbonate usually used for?
  • You chew it when symptoms come on. Many labels say to chew or crush the tablets completely and not swallow them whole. The number of tablets varies by product, so read your label o...
  • Many labels say not to use the maximum dose for more than 2 weeks unless a doctor is supervising you. If your symptoms last longer than 2 weeks, check in with your doctor.
📖 Read our full Calcium Carbonate guide →
4
Nutrient depletion considerations

Calcium Carbonate may be associated with lower levels of 4 nutrients — worth a chat with your pharmacist, not a cause for alarm.

🧪 Full Calcium Carbonate nutrient depletion report →
An association is not a deficiency. Educational only — don't start or stop anything without professional guidance.
Where does this data come from?
Plain-language summary from MedlinePlus (U.S. National Library of Medicine); supplement & herbal interactions and nutrient depletion data from the Natural Medicines database; our full guide is HelloPharmacist editorial content.

Pricing

A drug doesn't have one price. Each row is a different public payment system, and none is what you'd pay at the counter — that depends on your insurance. The ⓘ on each row explains what it measures.

Price systemPer eachPer package
Retail pharmacies payNADAC · weekly Not in the retail survey — common for institutional, discontinued, or low-volume packs.
Medicaid paysCMS SDUD · 12 mo No recent Medicaid claims on file for this NDC — rare and low-volume NDCs are suppressed in the public data.
Medicare drug plans payPart D · quarterly No Part D plan price is available for this NDC in our data.
ℹ️
No price is published for this exact package yet. CMS surveys NADAC per package size, so a different pack of the same drug often has one.
Where does this data come from?
NADAC (National Average Drug Acquisition Cost) is the CMS weekly pharmacy-acquisition-cost survey — what pharmacies pay. ASP (Average Sales Price) is the CMS Medicare Part B drug-payment file, published quarterly. Medicaid pays is computed by us from CMS State Drug Utilization Data (total reimbursed ÷ units, trailing 12 months) — gross of rebates and inclusive of dispensing fees, so it reflects what Medicaid paid, not an acquisition cost. Medicare drug plans pay is the median negotiated point-of-sale unit cost across plans listing this NDC in the CMS quarterly Prescription Drug Plan pricing files, before rebates. The VA pays is the federal contract price (FSS, and the statutory Big 4 ceiling where listed) from the VA National Acquisition Center pharmaceutical price file. All are free public government data; each measures a different payer, so the figures are not directly comparable.

Packaging — all sizes for this product

Package NDCDescription Marketing startMarketing endStatus
00924-0287-01 You're viewing this Main listing 20 PACKET in 1 BOX, UNIT-DOSE / 2 TABLET, CHEWABLE in 1 PACKET 2018-03-28 — Active

Therapeutic equivalents

ProductLabelerPackNADAC/unitTEStatusPrice vs. this
PhysiciansCare Antacid 420 mg 00924-0086-00 Acme 2 tablets — — FDA listed —
First Aid Only Antacid 420 mgthis 00924-0287-01 Acme 2 tablets — — FDA listed —
Belmora MELOX AGRURA 420 mg 27854-0120-01 Belmora, 2 tablets — — FDA listed —
Medique Alcalak 420 mg 47682-0201-13 Unifirst 2 tablets — — FDA listed —
Medi-First Antacid 420 mg 47682-0820-13 Unifirst 2 tablets — — FDA listed —
Medi-First Plus Antacid 420 mg 47682-0920-33 Unifirst 2 tablets — — FDA listed —
Unishield Antacid 420 mg 49314-1013-03 Unishield 2 tablets — — FDA listed —
Nutralox 420 mg 50090-2440-00 A-S 2 tablets — — FDA listed —
Nutralox 420 mg 50332-0151-01 HART 2 tablets — — FDA listed —
Antacid 420 mg 58228-0091-01 ProStat 20000 tablets — — FDA listed —
McKesson Antacid Calcium Carbonate 420 mg 68599-1411-03 McKesson 2 tablets — — FDA listed —
Calcium Carbonate 420 mg 69168-0036-54 Allegiant 22058 tablets — — FDA listed —
Antacid 420 mg 69396-0142-01 Trifecta 100 tablets — — FDA listed —
Uline Antacid 420 mg 69790-0820-33 Uline 2 tablets — — FDA listed —
Redicare Antacid Mint Flavored 420 mg 71105-0036-02 Redicare 2 tablets — — FDA listed —
Thompson Antacid 420 mg 73408-0921-33 Thompson 2 tablets — — FDA listed —
Mint Antacid 100 420 mg 73598-1142-01 JHK 2 tablets — — FDA listed —
Mint Antacid 250 420 mg 73598-1144-01 JHK 2 tablets — — FDA listed —
About this product: other versions of the same ingredient, strength and form are listed above, least expensive first, with FDA equivalence ratings where available.
Where does this data come from?
Equivalents are other NDCs of the same ingredient, form and route from the openFDA NDC Directory, ranked least-expensive-first by NADAC. Therapeutic-equivalence (AB) ratings come from the FDA Orange Book; biologics use the FDA Purple Book for biosimilar & interchangeable status.

Availability & generic status

🏛️
2014
On the market since
Jun 2014
📍
2026
Currently FDA-listed
12 years listed
🔒
·
No generic listed yet
brand only
ℹ️No FDA-approved generic found

We did not find an FDA-approved generic match for this exact strength, form and route.

Where does this data come from?
Patents and exclusivity from the FDA Orange Book (small-molecule drugs), refreshed from public FDA data. Generic launch timing is an estimate, not a guarantee.

Inactive Ingredients / Excipients

Inactive ingredients, also called excipients, are components of the drug product other than the active ingredient. They may include fillers, dyes, coatings, preservatives, flavors, or other formulation ingredients.

Loading inactive ingredients from the official FDA label in the background. No external source is being called by this page request.
Where does this data come from?
Source: official FDA Structured Product Labeling (SPL) via DailyMed and the openFDA label index. Structured IACT rows and label-wide narrative are kept separate; availability and product-level specificity depend on the submitted label.

Inactive ingredient FAQ

Are inactive ingredients the same for every manufacturer?
No. Inactive ingredients can differ by manufacturer, dosage form, strength, and package / product version.
Why might an inactive ingredient be missing?
Some SPLs do not provide a complete structured inactive-ingredient list, and older or unusual labels may only include the information in narrative text.
Can inactive ingredients matter?
Yes. They can matter for allergies, intolerances, dyes, gluten / lactose concerns, preservatives, and formulation differences — but confirm with a pharmacist or the manufacturer when it’s clinically important.

Manufacturer & labeler

LabelerAcme United Corporation
FDA applicationM001 (OTC MONOGRAPH DRUG)
Labeler code00924
First marketedJun 2014
Product typeHuman Otc Drug
Portfolio59 products on file
The labeler markets the product; the application holder owns the FDA approval. They’re often the same company but can differ (e.g. a repackager or an authorized generic). A mailing address / phone appears here when the manufacturer includes it in the product’s FDA label (not all do).
Where does this data come from?
Labeler, application holder and registered establishment from the FDA openFDA NDC Directory and Drugs@FDA; address/contact from the product’s FDA label.

FDA label — Drug Facts FDA SPL

The complete FDA label for this product — the official Drug Facts labeling, verbatim, section by section. Jump with a chip, search within the label, or expand everything.
🎯 Indications and Usage ⏱️ Dosage and Administration ⚠️ Warnings 🧪 Active Ingredient 🧪 Inactive Ingredients 🎯 Purpose
🎯 Indications and Usage 21 words ▾

Uses For the relief of the following symptoms associated with acid indigestion sour stomach heartburn upset stomach associated with these symptoms

⏱️ Dosage and Administration 55 words ▾

Directions do not use more than directed Adults and children: (12 years and older) Chew 2 tablets every 2 or 3 hours as symptoms occur or as directed by a physician. Do not take more than 19 tablets in 24 hours. Children under 12 years: Do not give to children under 12 years of age.

⚠️ Warnings 119 words ▾

Warnings Ask a doctor or phamacist before use if you are taking a prescription drug. Antacids may interact with certain prescription drugs. When using this product do not take more than 19 tablets in 24 hours do not use the maximum dosage for more than 2 weeks except under the advise and supervision of a physician do not exceed recommended dosage Stop using this product and ask a doctor if symptoms last more than 2 weeks Keep out of the reach of children.

As with any drug, if you are pregnant or nursing a baby, seek the advice of a health professional before using this product. If you are pregnant or breast feeding, ask a health profdessional before use.

🧪 Active Ingredient 9 words ▾

Active ingredient (in each tablet) Calcium Carbonate 420 mg

🧪 Inactive Ingredients 19 words ▾

Inactive ingredients aspartame*, croscarmellose sodium*, gum acacia*, magnesium stearate, maltodextrin, mineral oil*, mint flavor, sorbitol*, sucrose* * may contain

🎯 Purpose 2 words ▾

Purpose Antacid

Source: FDA Structured Product Labeling, mirrored from DailyMed / openFDA. Prefer the government’s original formatting? View this label on DailyMed ↗

Reported adverse events (FAERS)

Read carefully: FAERS reports are voluntary and unverified. Counts are not incidence, do not establish causation, are subject to reporting bias, and cannot be used to compare one drug to another. Shown for signal context only. Reports for Calcium carbonate — the ingredient across all brands.

Top reported reactions

Fatigue6,944
Nausea6,464
Diarrhoea5,709
Chronic Kidney Disease5,699
Pain5,437
Dyspnoea5,191
Vomiting5,014

Age at onset

Neonate89
Infant35
Child177
Adolescent182
Adult5,184
Elderly5,139

Reporter sex

73,763 reports
Male · 33%
Female · 67%
Unknown · 0%

Serious outcomes

Hospitalization29,679
Life-threatening6,774
Disabling5,778
Reports over time (by year) — tap or hover for the count & year
2020 2022 2024 2026 5,794 0
Most recent year is provisional (FAERS lags ~3 months).
Where does this data come from?
Adverse-event reports from the FDA Adverse Event Reporting System (FAERS) via openFDA. FAERS reports are voluntary and unverified — counts are not incidence and don’t establish causation.

About this NDC listing & data coverage

Over-the-counter (OTC) product
What data is (and isn’t) available for this NDC — tap to expand
NDC identity (package / product / labeler codes) ✓ Available
Labeler ✓ Available
Product & package description ✓ Available
Marketing category & status ✓ Available
Active ingredient / dosage form / route ✓ Available
FDA label (SPL via DailyMed) ✓ Available
Package photos ✓ Available
Inactive ingredients (structured) — Not published for this NDC The labeler did not submit a structured excipient list, or no SPL is available.
NADAC pharmacy acquisition price (CMS) — Not published for this NDC CMS publishes NADAC only for NDCs reported in its retail-pharmacy survey.
Orange Book / therapeutic-equivalence data — Not published for this NDC Applies only to products approved under an NDA/ANDA; many listings are out of scope.
HCPCS J-code billing crosswalk — Not published for this NDC Most self-administered / retail products have no J-code — that is normal.
Medicaid utilization (CMS SDUD) — Not published for this NDC CMS reports utilization only for NDCs with Medicaid claims above its privacy threshold.
“Not published” reflects what the public FDA / CMS / NLM sources provide for this exact package code — it is a property of the data feeds, not a judgment about the product.

Questions about this listing

Is this NDC FDA-approved?
An NDC listing does not by itself establish FDA approval — the NDC Directory records that a product is listed with FDA, not that it was reviewed and approved. This listing's marketing category is "Otc Monograph Drug". Products approved under an application carry an NDA, ANDA, or BLA number.
Why is there no price listed?
The pricing shown on our NDC pages comes from CMS NADAC, a voluntary survey of retail community pharmacy invoices. CMS does not publish a NADAC for every NDC — packages outside the retail survey (institutional and hospital products, bulk packages, discontinued items, and many OTC items) may never receive one. A missing price reflects the survey's scope, not this product's actual cost, and does not mean the product is free or unavailable.
Is the NDC printed on the package the same as the 11-digit billing NDC?
Yes, they identify this exact package in different formats. The form printed on the packaging and shown on DailyMed is the one the FDA registered. Insurance claims use a fixed 11-digit 5-4-2 format, so the short segment is padded with a leading zero and the dashes are dropped. The Identity section at the top of this page lists each form of this code.
Is this package still being marketed?
Yes, per the latest FDA NDC Directory data on this page: this package is listed as actively marketed, with no marketing end date reported by Acme United Corporation. Listing status can change — the directory data on this page refreshes weekly.
Who lists this product with the FDA?
Acme United Corporation is the labeler of record for this NDC — the company under whose FDA-assigned code the package is listed. The labeler may be the manufacturer itself or a distributor marketing the product under its own code.
Do I need a prescription for this product?
This NDC is listed with FDA as an over-the-counter product, so it does not require a prescription. Follow the package directions, and ask your pharmacist if you are unsure whether it is right for you.
This page identifies an FDA-listed package (the NDC) and reports public regulatory and pricing data about the listing. It is reference information, not a medical recommendation — talk to your pharmacist or prescriber about your own medication.
Where does this data come from?
Listing facts (marketing category, packager status, marketing dates) from the FDA openFDA NDC Directory; label availability from DailyMed; pricing coverage from CMS NADAC; equivalence scope from the FDA Orange Book.
← 00924-0255-00 · Acme 00924-0301-00 · Acme →
For educational and professional reference only — not medical advice. Pricing reflects published NADAC and CMS ASP (free public data) and may differ from your acquisition cost; always verify before billing or dispensing.