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Calcium carbonate 675 MG / magnesium hydroxide 135 MG Chewable Tablet — RxCUI 476549

RxNorm drug concept · Semantic clinical drug
RxCUI 476549 Semantic clinical drug · SCD ● Current RxNorm concept 8 FDA products 10 package NDCs Snapshot Jul 14, 2026

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Compiled from public NLM RxNorm and FDA (openFDA NDC directory) data sources. Editorial policy

What you’re looking at: the standardized identity of one medicine, as the U.S. drug-data system sees it. Below — every FDA-listed product, package code, price benchmark, and billing code that maps to it.

🗂️ Key Facts

RxCUI476549
Official nameCalcium carbonate 675 MG / magnesium hydroxide 135 MG Chewable Tablet
Concept typeSemantic clinical drug (SCD)
RxNorm statusCurrent RxNorm concept
Also known ascalcium carbonate 675 MG / milk of magnesia 135 MG Chewable Tablet; calcium carbonate 675 MG (Ca 270 MG) / magnesium hydroxide 135 MG Chewable Tablet
FDA products mapped8
Package NDCs mapped10
RxNorm release07/06/2026
Snapshot dataJul 14, 2026

📖 Skip the Codes — Read It in Plain English.

Our pharmacist-built guide to Calcium Carbonate: what it is, how it’s used, side effects, and interactions.

📗 Our plain-language guide HelloPharmacist
  • Most people use it as a fast-acting antacid to get quick relief from heartburn, acid indigestion, sour stomach, or an upset stomach. You'll find it in brands like Tums, Rolaids, an...
  • What is calcium carbonate actually used for?
  • Don't use the maximum daily dose for more than 2 weeks in a row without talking to a doctor first. If your heartburn or stomach symptoms keep coming back or don't improve, that's y...
  • How long can I keep taking this before I should see a doctor?
📖 Read our full Calcium Carbonate guide →

🕸️ Concept Web — How Calcium carbonate 675 MG / magnesium hydroxide 1... Connects

One RxCUI never lives alone. Follow the path from the raw ingredient down to the exact strength-and-form concepts FDA products carry — every stop is a real RxNorm concept with its own identifier. Hover or focus any chip for what it means.
This page's concept Calcium carbonate 675 MG / magnesium hydroxide 135 MG Chewable Tablet RxCUI 476549

Every web starts here: one RxCUI, one fixed meaning in the RxNorm vocabulary.

  1. Ingredients 3

    The active substance itself — no strength, form, or brand attached yet.

    • Calcium carbonate 1897
    • Magnesium hydroxide 6581
    • Calcium carbonate / magnesium hydroxide 214347
  2. Brand names 1

    The same medicine's trade names. A brand name alone says nothing about strength or form.

    • Rolaids Reformulated Aug 2006 642335
  3. Dose forms 12

    The ingredient poured into a form — tablet, solution, cream — still without one fixed strength.

    • Calcium carbonate / magnesium hydroxide Chewable Tablet 371205
    • Calcium carbonate / magnesium hydroxide Chewable Product 1295639
    • Calcium carbonate / magnesium hydroxide Oral Product 1153582
    • Calcium carbonate / magnesium hydroxide Pill 1153583
    • Calcium carbonate / magnesium hydroxide Chewable Tablet [Rolaids Reformulated Aug 2006] 642337
    • Rolaids Reformulated Aug 2006 Chewable Product 1296039
    • Rolaids Reformulated Aug 2006 Oral Product 1181384
    • Rolaids Reformulated Aug 2006 Pill 1181385
    • +4 more in this family
  4. Clinical & branded drugs 4

    Ingredient + strength + dose form. These are the concepts real FDA products actually carry.

Showing up to 8 concepts per family — 16 of 20 stored related concepts drawn.
These are official RxNorm vocabulary relationships — how concepts name and organize the same medicine. They do not establish therapeutic equivalence or substitutability: two concepts appearing in one web is never a statement that products can be swapped.

🔀 Generic ⇄ Brand Crosswalk

The same medicine has an unbranded (generic) identity and one or more brand-name identities — each with its own RxCUI. This is a naming relationship in RxNorm, not a statement that any two products are substitutable.

Generic (Clinical) Concepts

  • Calcium carbonate 675 MG SCDC · 476550
  • Magnesium hydroxide 135 MG SCDC · 476552
  • Calcium carbonate / magnesium hydroxide Chewable Tablet SCDF · 371205
  • Calcium carbonate / magnesium hydroxide Chewable Product SCDG · 1295639
  • Calcium carbonate / magnesium hydroxide Oral Product SCDG · 1153582
  • Calcium carbonate / magnesium hydroxide Pill SCDG · 1153583

Brand-Name Concepts

  • Calcium carbonate 675 MG / magnesium hydroxide 135 MG Chewable Tablet [Rolaids Reformulated Aug 2006] SBD · 642355
  • Calcium carbonate 675 MG / magnesium hydroxide 135 MG [Rolaids Reformulated Aug 2006] SBDC · 642354
  • Calcium carbonate / magnesium hydroxide Chewable Tablet [Rolaids Reformulated Aug 2006] SBDF · 642337
  • Rolaids Reformulated Aug 2006 Chewable Product SBDG · 1296039
  • Rolaids Reformulated Aug 2006 Oral Product SBDG · 1181384
  • Rolaids Reformulated Aug 2006 Pill SBDG · 1181385
  • Rolaids Reformulated Aug 2006 BN · 642335

📦 FDA Products & Package NDCs

8 products · 10 package NDCs
10 package NDCs map to RxCUI 476549 in the current snapshot — up to 50 per page. Each linked NDC opens its full package page.
Package NDC Package Brand / generic name Labeler Marketing start
41167-1001-01 96 TABLET, CHEWABLE in 1 BOTTLE, PLASTIC (41167-1001-1) Rolaids Extra Strength Mint Chattem, Inc. 2013-09-01
41167-1002-03 3 PACKAGE in 1 CELLO PACK (41167-1002-3) / 10 TABLET, CHEWA... Rolaids Extra Strength Fruit Chattem, Inc. 2013-09-01
41250-0978-10 100 TABLET, CHEWABLE in 1 BOTTLE, PLASTIC (41250-978-10) Meijer Extra Strength Freshmint Flavor MEIJER DISTRIBUTION INC 2019-04-18
53943-0108-10 100 TABLET, CHEWABLE in 1 BOTTLE, PLASTIC (53943-108-10) Extra Strength Antacid Freshmint DISCOUNT DRUG MART 2019-05-15
63941-0071-10 100 TABLET, CHEWABLE in 1 BOTTLE, PLASTIC (63941-071-10) Best Choice Extra Strength BEST CHOICE (VALU MERCHANDISERS COMPANY) 2019-04-18
68016-0678-00 100 TABLET, CHEWABLE in 1 BOTTLE, PLASTIC (68016-678-00) Premier Value Extra Strength Freshmint Flavor CHAIN DRUG CONSORTIUM, LLC 2019-04-18
69423-0827-03 3 PACKAGE in 1 CELLO PACK (69423-827-03) / 10 TABLET, CHEWA... Rolaids Extra Strength Antacid Mint THE PROCTER & GAMBLE MANUFACTURING COMPANY 2024-01-01
69423-0827-96 96 TABLET, CHEWABLE in 1 BOTTLE, PLASTIC (69423-827-96) Rolaids Extra Strength Antacid Mint THE PROCTER & GAMBLE MANUFACTURING COMPANY 2024-01-01
84126-0324-03 3 PACKAGE in 1 CELLO PACK (84126-324-03) / 10 TABLET, CHEWA... Rolaids ORIGINAL THE PROCTER & GAMBLE MANUFACTURING COMPANY 2024-12-09
84126-0324-96 96 TABLET, CHEWABLE in 1 BOTTLE, PLASTIC (84126-324-96) Rolaids ORIGINAL THE PROCTER & GAMBLE MANUFACTURING COMPANY 2024-12-09
Observed labelers: THE PROCTER & GAMBLE MANUFACTURING COMPANY (4) · Chattem, Inc. (2) · BEST CHOICE (VALU MERCHANDISERS COMPANY) (1) · CHAIN DRUG CONSORTIUM, LLC (1) · DISCOUNT DRUG MART (1) · MEIJER DISTRIBUTION INC (1) — this is the FDA-listed mapping footprint, not sales, inventory, availability, or market share.

🗃️ Sources & Limits

Atlas generation902fddb9-e9c1-4004-bf4c-dba4d51037c7
openFDA export observedJul 14, 2026
RxNorm release07/06/2026
Methodology2026-07-full-catalog-v1
  • A shared RxCUI does not prove interchangeability. Products mapped to the same concept are not thereby equivalent or substitutable — equivalence is a separate, product-level determination.
  • Listing here does not establish approval or coverage. Appearing in this snapshot is a data observation, not an FDA approval status or a payer coverage decision.
  • Missing data never means zero. A silent dataset (no price, no billing code, no utilization) means no observation — not that the real-world value is zero.
  • Counts describe the mapping footprint. Product, package, and labeler counts are the FDA-listed mapping footprint in this snapshot — not sales, inventory, availability, or market share.
This product uses publicly available data from the U.S. National Library of Medicine (NLM), National Institutes of Health, Department of Health and Human Services; NLM is not responsible for the product and does not endorse or recommend this or any other product.

Machine-readable JSON

Reference information about drug-concept identifiers and public regulatory data — not medical advice. Talk to your pharmacist or prescriber about your own medication.