magnesium oxide

SPL v13

SPL

SPL Set ID 52eeac0e-94bb-48c3-81dc-578e96406c01

Route

oral

Published

Effective Date 2025-08-05

Document Type 34390-5 HUMAN OTC DRUG LABEL

Drug Facts

Composition & Product

Active Ingredients

magnesium cation (400 mg)

Inactive Ingredients

microcrystalline cellulose croscarmellose sodium starch, corn silicon dioxide stearic acid

Identifiers & Packaging

Pill Appearance

Imprint: AM3 Shape: round Color: white Size: 11 mm Score: 2

Marketing Status

otc monograph drug active Since 2020-10-15

Purpose

Antacid

Description

Drug Facts

Medication Information

Purpose

Antacid

Directions

take one or two antacid tablets daily. Do not exceed two tablets unless directed by a physician.

Other Information

Store at controlled room temperature 15° to 30°C (59° to 86°F).
Tamper evident, do not use if imprinted safety seal under cap is broken or missing.

Inactive Ingredients

Colloidal Silicon Dioxide, Corn Starch, Croscarmellose Sodium, Microcrystalline Cellulose, and Stearic Acid.

Description

Drug Facts

Questions?

Call 1-844-221-7294 M-F 9am - 5pm EST

Use

relieves:

acid indigestion
upset stomach

Section 42229-5

Drug Facts

Section 50565-1

Keep out of reach of children.

Section 50570-1

Do not take more than 2 tablets in a 24 hour period.

May have a laxative effect.

Active Ingredient

Magnesium Oxide 400 mg (241.3 mg Elemental Magnesium)

Ask A Doctor Before Use If

you have kidney disease
you are taking a prescription drug (antacids may interact with certain prescription drugs)
you are pregnant or breast feeding.

Principal Display Panel 400 Mg Tablet Bottle Label

NDC 69367-298-20

Magnesium

Oxide 400 mg

241.3 mg Elemental Magnesium

Antacid

Sugar and Gluten Free

120 Tablets

Westminster

Pharmaceuticals

Structured Label Content

Purpose

Antacid

Directions

take one or two antacid tablets daily. Do not exceed two tablets unless directed by a physician.

Other Information

Store at controlled room temperature 15° to 30°C (59° to 86°F).
Tamper evident, do not use if imprinted safety seal under cap is broken or missing.

Inactive Ingredients

Colloidal Silicon Dioxide, Corn Starch, Croscarmellose Sodium, Microcrystalline Cellulose, and Stearic Acid.

Questions?

Call 1-844-221-7294 M-F 9am - 5pm EST

Use

relieves:

acid indigestion
upset stomach

Section 42229-5 (42229-5)

Drug Facts

Section 50565-1 (50565-1)

Keep out of reach of children.

Section 50570-1 (50570-1)

Do not take more than 2 tablets in a 24 hour period.

May have a laxative effect.

Active Ingredient

Magnesium Oxide 400 mg (241.3 mg Elemental Magnesium)

Ask A Doctor Before Use If (Ask a doctor before use if)

you have kidney disease
you are taking a prescription drug (antacids may interact with certain prescription drugs)
you are pregnant or breast feeding.

Principal Display Panel 400 Mg Tablet Bottle Label (PRINCIPAL DISPLAY PANEL - 400 mg Tablet Bottle Label)

NDC 69367-298-20

Magnesium

Oxide 400 mg

241.3 mg Elemental Magnesium

Antacid

Sugar and Gluten Free

120 Tablets

Westminster

Pharmaceuticals

Advanced Ingredient Data

[{"name": "MAGNESIUM CATION", "unii": "T6V3LHY838", "classCode": "ACTIM", "strengthNumerator": "400", "strengthDenominator": "1", "strengthNumeratorUnit": "mg", "strengthDenominatorUnit": "1"}, {"name": "MICROCRYSTALLINE CELLULOSE", "unii": "OP1R32D61U", "classCode": "IACT", "strengthNumerator": "", "strengthDenominator": "", "strengthNumeratorUnit": "", "strengthDenominatorUnit": ""}, {"name": "CROSCARMELLOSE SODIUM", "unii": "M28OL1HH48", "classCode": "IACT", "strengthNumerator": "", "strengthDenominator": "", "strengthNumeratorUnit": "", "strengthDenominatorUnit": ""}, {"name": "STARCH, CORN", "unii": "O8232NY3SJ", "classCode": "IACT", "strengthNumerator": "", "strengthDenominator": "", "strengthNumeratorUnit": "", "strengthDenominatorUnit": ""}, {"name": "SILICON DIOXIDE", "unii": "ETJ7Z6XBU4", "classCode": "IACT", "strengthNumerator": "", "strengthDenominator": "", "strengthNumeratorUnit": "", "strengthDenominatorUnit": ""}, {"name": "STEARIC ACID", "unii": "4ELV7Z65AP", "classCode": "IACT", "strengthNumerator": "", "strengthDenominator": "", "strengthNumeratorUnit": "", "strengthDenominatorUnit": ""}]

Raw Label Data

All Sections (JSON)

{"Use": "relieves: acid indigestion upset stomach", "42229-5": "Drug Facts", "50565-1": "Keep out of reach of children.", "50570-1": "Do not take more than 2 tablets in a 24 hour period. May have a laxative effect.", "Purpose": "Antacid", "Directions": "take one or two antacid tablets daily. Do not exceed two tablets unless directed by a physician.", "Questions?": "Call 1-844-221-7294 M-F 9am - 5pm EST", "Active Ingredient": "Magnesium Oxide 400 mg (241.3 mg Elemental Magnesium)", "Other Information": "Store at controlled room temperature 15° to 30°C (59° to 86°F). Tamper evident, do not use if imprinted safety seal under cap is broken or missing.", "Inactive Ingredients": "Colloidal Silicon Dioxide, Corn Starch, Croscarmellose Sodium, Microcrystalline Cellulose, and Stearic Acid.", "Ask a doctor before use if": "you have kidney disease you are taking a prescription drug (antacids may interact with certain prescription drugs) you are pregnant or breast feeding.", "PRINCIPAL DISPLAY PANEL - 400 mg Tablet Bottle Label": "NDC 69367-298-20 Magnesium Oxide 400 mg 241.3 mg Elemental Magnesium Antacid Sugar and Gluten Free 120 Tablets Westminster Pharmaceuticals"}

Additional Information

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Source: dailymed · Ingested: 2026-02-15T12:06:43.284999 · Updated: 2026-03-14T23:09:39.646164