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MAXIMUM STRENGTH ANTACID ANTIGAS aluminum hydroxide, magnesium hydroxide, simethicone 400 mg/5mL; 400 mg/5mL; 40 mg/5mL Suspension, 355 mL

by WALGREEN COMPANY · 355 mL in 1 BOTTLE (0363-1691-12)
NDC 00363-1691-12
🏷️ FDA NDC (as labeled) 0363-1691-12 billing pads the labeler segment with a zero
OTC On market Non-controlled
🗂️ Data synced Sep 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

🆔 Identity & classification

FDA NDC (as labeled) 0363-1691-12
Product NDC 0363-1691
11-digit billing NDC 00363169112
RxCUI 237870
UNII 5QB0T2IUN0, NBZ3QY004S, 92RU3N3Y1O
Application # M001
SPL Set ID 7cd8fdf4-f762-f936-e053-2a91aa0aa6ee
Physiologic effect Skin Barrier Activity
DEA schedule Non-controlled
Marketing category OTC MONOGRAPH DRUG
Marketing status On market
FDA listing status Listed (active directory)
Marketing start 2014-09-01
Route ORAL
Dosage form SUSPENSION
Substance ALUMINUM HYDROXIDE; MAGNESIUM HYDROXIDE; DIMETHICONE
Why two NDCs? The FDA registers this code as 0363-1691-12 — 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 → 00363-1691-12. 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 Aluminium compounds class.

Drug family (ATC) Aluminium compounds
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.

🏭 Manufacturer & labeler

LabelerWALGREEN COMPANY
FDA applicationM001 (OTC MONOGRAPH DRUG)
Labeler code00363
First marketedSep 2014
Product typeHuman Otc Drug
Portfolio468 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.

🩺 Clinical

🧪 What is this product?

This is an over-the-counter antacid suspension taken by mouth. Aluminum hydroxide and magnesium hydroxide are antacid ingredients commonly used to neutralize stomach acid and provide relief from heartburn and indigestion. Simethicone is an anti-gas ingredient typically used to help reduce bloating and gas discomfort. This product combines these three ingredients in a single liquid formulation marketed under the FDA's OTC monograph rules for antacids.

5
Nutrient depletion considerations

Aluminum Hydroxide, Magnesium Hydroxide, Simethicone (OTC drug) may be associated with lower levels of 5 nutrients — worth a chat with your pharmacist, not a cause for alarm.

🧪 Full Aluminum Hydroxide, Magnesium Hydroxide, Simethicone (OTC drug) 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.

🧪 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.

💲 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 mLPer 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.

🔁 Therapeutic equivalents

ProductLabelerPackNADAC/unitTEStatusPrice vs. this
Maximum Strength Antacid 400 mg/5mL; 400 mg/5mL; 40 mg/5mL 63868-0715-57 Chain 355 ml $0.010 — FDA listed —
Almacone Double Strength 400 mg/5mL; 400 mg/5mL; 40 mg/5mL 00536-0015-83 RUGBY 355 ml $0.012 — Availability likely —
Mintox Maximum Strength 400 mg/5mL; 400 mg/5mL; 40 mg/5mL 00904-5725-14 MAJOR 355 ml $0.012 — Availability likely —
Antacid Antigas Nta 800 mg/10mL; 800 mg/10mL; 80 mg/10mL 46122-0431-40 AMERISOURCEBERGEN 355 ml $0.012 — Availability likely —
Antacid Antigas Nta 800 mg/10mL; 800 mg/10mL; 80 mg/10mL 46122-0432-40 AMERISOURCEBERGEN 355 ml $0.012 — Availability likely —
Maximum Strength Antacid 800 mg/10mL; 800 mg/10mL; 80 mg/10mL 70000-0062-01 CARDINAL 355 ml $0.012 — Availability likely —
Maximum Strength Antacid 400 mg/5mL; 400 mg/5mL; 40 mg/5mL 70000-0422-01 CARDINAL 355 ml $0.012 — Availability likely —
Maximum Strength Antacid Antigas 400 mg/5mL; 400 mg/5mL; 40 mg/5mL 70677-1064-01 STRATEGIC 355 ml $0.012 — Availability likely —
Maximum Strength Antacid And Antigas 400 mg/5mL; 400 mg/5mL; 40 mg/5mL 70677-1065-01 STRATEGIC 355 ml $0.012 — Availability likely —
QCH Maximum Strength Antacid 516 800 mg/10mL; 800 mg/10mL; 80 mg/10mL 83324-0122-12 Chain 355 ml $0.012 — Availability likely —
Mag-AL Plus XS 400 mg/5mL; 400 mg/5mL; 40 mg/5mL 00121-1762-30 PAI 10 cups — — FDA listed —
Maximum Strength Antacid Antigas 400 mg/5mL; 400 mg/5mL; 40 mg/5mLthis 00363-1691-12 WALGREEN 355 ml — — FDA listed —
Maximum Strength Antacid And Gas Relief 400 mg/5mL; 400 mg/5mL; 40 mg/5mL 11822-3727-06 RITE 355 ml — — FDA listed —
Maximum Strength Antacid And Antigas 400 mg/5mL; 400 mg/5mL; 40 mg/5mL 11822-5742-00 RITE 355 ml — — Discontinued —
Mintox Maximum Strength 400 mg/5mL; 400 mg/5mL; 40 mg/5mL 17856-5725-03 ATLANTIC 30 ml — — FDA listed —
Antacid 400 mg/5mL; 400 mg/5mL; 40 mg/5mL 21130-0508-05 Safeway 177 ml — — FDA listed —
Antacid Plus 800 mg/10mL; 800 mg/10mL; 80 mg/10mL 21130-0691-12 BETTER 355 ml — — FDA listed —
Maximum Strength Antacid 400 mg/5mL; 400 mg/5mL; 40 mg/5mL 30142-0638-12 KROGER 355 ml — — FDA listed —
Maximum Strength Antacid Mint 800 mg/10mL; 800 mg/10mL; 80 mg/10mL 36800-0342-40 Topco 355 ml — — FDA listed —
Maximum Strength Antacid Cherry liquid 800 mg/10mL; 800 mg/10mL; 80 mg/10mL 36800-0587-40 Topco 355 ml — — FDA listed —
maximum strength antacid cherry 800 mg/10mL; 800 mg/10mL; 80 mg/10mL 41163-0065-05 UNITED 355 ml — — FDA listed —
Maximum Strength Antacid Cherry 800 mg/10mL; 800 mg/10mL; 80 mg/10mL 49035-0638-12 WAL-MART 355 ml — — FDA listed —
Maximum Strength Antacid 800 mg/10mL; 800 mg/10mL; 80 mg/10mL 49035-0681-12 WAL-MART 355 ml — — FDA listed —
Maximum Strength Antacid And Gasrelief 800 mg/10mL; 800 mg/10mL; 80 mg/10mL 50804-0619-12 GOODSENSE 355 ml — — FDA listed —
Antacid And Gasrelief 800 mg/10mL; 800 mg/10mL; 80 mg/10mL 50804-0638-12 GOODSENSE 355 ml — — FDA listed —
Maximum Strength Antacid 800 mg/10mL; 800 mg/10mL; 80 mg/10mL 51316-0142-12 CVS 355 ml — — FDA listed —
Mag-Al Plus XS 2400 mg/30mL; 2400 mg/30mL; 240 mg/30mL 55154-9422-05 Cardinal 5 cups — — FDA listed —
Maximum Strength Advanced Antacid 800 mg/10mL; 800 mg/10mL; 80 mg/10mL 55910-0638-12 DOLGENCORP, 355 ml — — FDA listed —
Aluminum Hydroxide, Magnesium Hydroxide and Simethicone 2400 mg/30mL; 2400 mg/30mL; 240 mg/30mL 57237-0324-31 Rising 100 cups — — FDA listed —
Geri-Lanta Maximum Strength 400 mg/5mL; 400 mg/5mL; 40 mg/5mL 57896-0619-12 Geri-Care 355 ml — — FDA listed —
Geri-Mox Max Cherry 400 mg/5mL; 400 mg/5mL; 40 mg/5mL 57896-0638-10 Geri-Care 100 cups — — FDA listed —
MAXIMUM STRENGTH Antacid 400 mg/5mL; 400 mg/5mL; 40 mg/5mL 57896-0664-12 Geri-Care 355 ml — — FDA listed —
Aluminum Hydroxide, Magnesium Hydroxide, and Dimethicone 400 mg/5mL; 400 mg/5mL; 40 mg/5mL 60687-0888-76 American 10 cups — — FDA listed —
Mylanta Maximum Strength Classic Flavor 800 mg/10mL; 800 mg/10mL; 80 mg/10mL 62372-0500-12 Infirst 355 ml — — FDA listed —
Mylanta Maximum Strength Vanilla Caramel Flavor 800 mg/10mL; 800 mg/10mL; 80 mg/10mL 62372-0504-12 Infirst 355 ml — — FDA listed —
Maximum Strength Antacid And Antigas 400 mg/5mL; 400 mg/5mL; 40 mg/5mL 63941-0619-12 VALU 355 ml — — FDA listed —
Maximum Strength Antacid And Antigas Cherry 400 mg/5mL; 400 mg/5mL; 40 mg/5mL 63941-0638-12 VALU 355 ml — — FDA listed —
Geri-Lanta Maximum Strength 400 mg/5mL; 400 mg/5mL; 40 mg/5mL 68071-3423-01 NuCare 355 ml — — FDA listed —
Mintox Maximum Strength 400 mg/5mL; 400 mg/5mL; 40 mg/5mL 68071-4114-01 NuCare 355 ml — — FDA listed —
Maximum Strength Antacid Cherry 800 mg/10mL; 800 mg/10mL; 80 mg/10mL 69256-0508-40 Harris 355 ml — — FDA listed —
Maximum Strength Antacid 800 mg/10mL; 800 mg/10mL; 80 mg/10mL 69256-0517-05 Harris 355 ml — — FDA listed —
Maximum Strength Antacid Mint 800 mg/10mL; 800 mg/10mL; 80 mg/10mL 69842-0296-73 CVS 355 ml — — FDA listed —
Antacid 400 mg/5mL; 400 mg/5mL; 40 mg/5mL 69842-0508-05 CVS 355 ml — — FDA listed —
Maximum Strength Antacid 800 mg/10mL; 800 mg/10mL; 80 mg/10mL 69842-0619-12 CVS 355 ml — — FDA listed —
Maximum Strength Antacid Cherry 400 mg/5mL; 400 mg/5mL; 40 mg/5mL 69842-0683-12 CVS 355 ml — — Discontinued —
Mintox Maximum Strength 400 mg/5mL; 400 mg/5mL; 40 mg/5mL 71205-0515-35 Proficient 355 ml — — FDA listed —
Antacid 800 mg/10mL; 800 mg/10mL; 80 mg/10mL 72476-0516-05 Retail 355 ml — — FDA listed —
Maximum Strength Antacid and Antigas 800 mg/10mL; 800 mg/10mL; 80 mg/10mL 79481-0638-01 Meijer, 355 ml — — FDA listed —
Kesin MAG-AL Plus XS 40 mg/5mL; 400 mg/5mL; 400 mg/5mL 81033-0007-01 Kesin 100 cups — — FDA listed —
Aluminum Hydroxide, Magnesium Hydroxide and Simethicone 2400 mg/30mL; 2400 mg/30mL; 240 mg/30mL 84415-0010-01 Everpharm 100 cups — — 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
Sep 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.

🔬 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 MAXIMUM STRENGTH ANTACID ANTIGAS (this brand).

Top reported reactions

Electrocardiogram Qt Prolonged4
Drug Interaction2
Drug Level Increased2
Schizoaffective Disorder2
Abdominal Discomfort1
Abdominal Distension1
Abdominal Pain1

Age at onset

Adolescent2
Adult1
Elderly1

Reporter sex

7 reports
Male · 33%
Female · 67%

Serious outcomes

Hospitalization5
Life-threatening1
Reports over time (by year) — tap or hover for the count & year
2021 2022 2024 2026 1 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.

📦 Packaging — all sizes for this product

Package NDCDescription Marketing startStatus
00363-1691-12 You're viewing this 355 mL in 1 BOTTLE (0363-1691-12) 2014-09-01 Active

🧭 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 — Not published for this NDC No photo available yet for this listing.
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 FDA registers it as 0363-1691-12, which is what is printed on the packaging and shown on DailyMed. Insurance claims use a fixed 11-digit 5-4-2 format, so the short segment is padded with a leading zero: 00363-1691-12, written without dashes as 00363169112. The Identity section at the top of this page lists every form of this code.
What do the three segments of this NDC mean?
In 00363-1691-12, the first segment (00363) is the labeler code FDA assigned to WALGREEN COMPANY; the middle segment (1691) identifies this specific product — its ingredient, strength, and dosage form; and the last segment (12) identifies this exact package size and type. Together they name one specific package of one specific product.
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 WALGREEN COMPANY. Listing status can change — the directory data on this page refreshes weekly.
Who lists this product with the FDA?
WALGREEN COMPANY 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.

📄 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 📦 Storage and Handling 🧪 Active Ingredient 🧪 Inactive Ingredients 🎯 Purpose
🎯 Indications and Usage 13 words ▾

Uses relieves heartburn sour stomach acid indigestion the symptoms referred to as gas

⏱️ Dosage and Administration 36 words ▾

Directions shake well before use adults and children 12 years and older: take 2 to 4 teaspoonfuls between meals, at bedtime, or as directed by a doctor children under 12 years of age: ask a doctor

⚠️ Warnings 84 words ▾

Warnings Do not take more than 12 teaspoonfuls in 24 hours or use the maximum dosage for more than 2 weeks. Ask a doctor before use if you have kidney disease a magnesium-restricted diet Ask a doctor or pharmacist before use if you are taking a prescription drug. Antacids may interact with certain prescription drugs.

Stop use and ask a doctor if symptoms last more than 2 weeks If pregnant or breast-feeding, ask a health professional before use. Keep out of reach of children.

📦 Storage and Handling 23 words ▾

Other information each 5 mL teaspoonful contains: magnesium 165 mg, sodium 5 mg store at room temperature and avoid freezing keep tightly closed

🧪 Active Ingredient 22 words ▾

Active ingredients (in each 5 mL teaspoonful) Aluminum hydroxide 400 mg (equivalent to dried gel, USP) Magnesium hydroxide 400 mg Simethicone 40mg

🧪 Inactive Ingredients 20 words ▾

Inactive ingredients benzyl alcohol, butylparaben, carboxymethylcellulose sodium, flavor (contains alcohol), hypromellose, microcrystalline cellulose, propylparaben, purified water, saccharin sodium, sorbitol solution

🎯 Purpose 3 words ▾

Purposes Antacid Antigas

Source: FDA Structured Product Labeling, mirrored from DailyMed / openFDA. Prefer the government’s original formatting? View this label on DailyMed ↗
← 00363-1686-07 · WALGREENS 00363-1699-01 · Walgreen →
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.