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Magnesium Oxide by Virtus Pharmaceuticals

Medically reviewed on September 11, 2017

Dosage form: tablet
Ingredients: Magnesium Oxide 400mg
Labeler: Virtus Pharmaceuticals
NDC Code: 69543-217

Disclaimer: Most OTC drugs are not reviewed and approved by FDA, however they may be marketed if they comply with applicable regulations and policies. FDA has not evaluated whether this product complies.

Magnesium Oxide

Drug Facts

Active ingredient

Magnesium Oxide 400 mg (241.3 mg Elemental Magnesium)





  • acid indigestion
  • upset stomach


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.

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

  • May have a laxative effect.

Keep out of reach of children.

  • 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

Croscarmellose Sodium, Microcrystalline Cellulose, Silicon Dioxide, and Stearic Acid.


Call Virtus at 1-888-848-3593 M-F, 8:30 - 5 EST or FDA at 1-800-FDA-1088

PRINCIPAL DISPLAY PANEL - 120 Tablet Bottle Label


Oxide 400 mg

241.3 mg Elemental Magnesium

No sugar, gluten, yeast, corn, wheat,
milk, artificial colors, flavors or
preservatives added.

120 Tablets


magnesium oxide tablet
Product Information
Product TypeHUMAN OTC DRUGItem Code (Source)NDC:69543-217
Route of AdministrationORALDEA Schedule    
Active Ingredient/Active Moiety
Ingredient NameBasis of StrengthStrength
Magnesium Oxide (Magnesium Cation) Magnesium Oxide400 mg
Inactive Ingredients
Ingredient NameStrength
Croscarmellose Sodium 
Cellulose, Microcrystalline 
Silicon Dioxide 
Stearic Acid 
Product Characteristics
ColorWHITEScoreno score
FlavorImprint CodeT
#Item CodePackage Description
1NDC:69543-217-12120 TABLET in 1 BOTTLE
Marketing Information
Marketing CategoryApplication Number or Monograph CitationMarketing Start DateMarketing End Date
OTC MONOGRAPH FINALpart33109/08/2015
Labeler - Virtus Pharmaceuticals (079659493)

Virtus Pharmaceuticals

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Disclaimer: Every effort has been made to ensure that the information provided here is accurate, up-to-date and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. This information has been compiled for use by healthcare practitioners and consumers in the United States. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate that the drug or combination is safe, effective or appropriate for any given patient. If you have questions about the substances you are taking, check with your doctor, nurse or pharmacist.