Drug Reference
Magnesium Oxide
Magnesium compounds
OTC
Fact box
- Therapeutic class
- Magnesium compounds
- Habit forming
- No
- Availability
- Over-the-counter (OTC)
Brand names
BeelithClenpiqFolgard OSLactocalMag-Ox 400MagmilaxPhillips' Cramp-freeSomnicinUro-MagVitafol-One
Available as
400 MG · Oral Tablet1.5 MG · Oral Tablet250 MG · Oral Tablet45 MG · Extended Release Oral Tablet100 MG · Oral Tablet30 MG · Oral Capsule120 MG · Oral Tablet50 MG · Oral Capsule600 MG · Oral Tablet140 MG · Oral Capsule75 MG/ML · Oral Solution17900 MG · Oral Tablet400 MG · Oral Capsule68.6 MG/ML · Oral Solution440 MG · Oral Tablet144 MG · Oral Capsule420 MG · Oral Tablet500 MG · Oral Tablet200 MG · Oral Tablet500 MG · Oral Capsule625 MG · Oral Tablet80 MG · Oral Tablet276000 MG · Oral Tablet
FDA label sections are from openFDA and may not reflect the most recent labeling — confirm against the current DailyMed label.
Uses
Use relieves: ■ acid indigestion ■ upset stomach
How to use / dosing
Directions take one or two antacid tablets daily. Do not exceed two tablets unless directed by a physician.
Safety advice
Conservative summary derived from FDA labeling — defaults to “consult your doctor” unless the label is explicit. Not a substitute for your clinician’s advice.
PregnancyConsult your doctor
…drug (antacids may interact with certain prescription drugs) you are pregnant or breast feeding.…
BreastfeedingNo information
No specific information in the FDA label. Check LactMed →
AlcoholNo information
No specific information in the FDA label.
DrivingNo information
No specific information in the FDA label.
KidneyCaution
…Warnings 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.…
LiverNo information
No specific information in the FDA label.
Warnings & precautions
Warnings 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.
Current FDA labels (DailyMed)
- PRENATE RESTORE (ASCORBIC ACID, CHOLECALCIFEROL, .ALPHA.-TOCOPHEROL ACETATE, DL-, FOLIC ACID, PYRIDOXINE HYDROCHLORIDE, CYANOCOBALAMIN, BIOTIN, CALCIUM, IRON, MAGNESIUM OXIDE, LACTIC ACID AND DOCONEXENT) CAPSULE, GELATIN COATED [AVION PHARMACEUTICALS, LLC]
- PRENATE MINI (ASCORBIC ACID, CHOLECALCIFEROL, .ALPHA.-TOCOPHEROL ACETATE, DL-, PYRIDOXINE HYDROCHLORIDE, FOLIC ACID, LEVOMEFOLATE CALCIUM, CYANOCOBALAMIN, BIOTIN, CALCIUM CARBONATE, FERROUS ASPARTO GLYCINATE, IRON, POTASSIUM IODIDE, MAGNESIUM OXIDE, DOCONEXENT AND LOWBUSH BLUEBERRY) CAPSULE, GELATIN COATED [AVION PHARMACEUTICALS, LLC]
- PRENATE DHA (ASCORBIC ACID, CHOLECALCIFEROL, .ALPHA.-TOCOPHEROL ACETATE, DL-, FOLIC ACID, LEVOMEFOLATE CALCIUM, PYRIDOXINE HYDROCHLORIDE, CYANOCOBALAMIN, CALCIUM FORMATE, FERROUS ASPARTO GLYCINATE, MAGNESIUM OXIDE AND DOCONEXENT) CAPSULE, GELATIN COATED [AVION PHARMACEUTICALS, LLC]
- PRENATE CHEWABLE (CALCIUM CARBONATE, CHOLECALCIFEROL, MAGNESIUM OXIDE, BORON, FOLIC ACID, LEVOMEFOLATE GLUCOSAMINE, PYRIDOXINE HYDROCHLORIDE, CYANOCOBALAMIN, BIOTIN AND BLUEBERRY) TABLET, CHEWABLE [AVION PHARMACEUTICALS, LLC]
- PRENATE ELITE (.BETA.-CAROTENE, ASCORBIC ACID, CHOLECALCIFEROL, .ALPHA.-TOCOPHEROL ACETATE, DL-, THIAMINE MONONITRATE, RIBOFLAVIN, NIACINAMIDE, PYRIDOXINE HYDROCHLORIDE, FOLIC ACID, LEVOMEFOLATE CALCIUM, CALCIUM FORMATE, FERROUS ASPARTO GLYCINATE, CYANOCOBALAMIN, BIOTIN, POTASSIUM IODIDE, MAGNESIUM OXIDE, ZINC OXIDE AND CUPRIC OXIDE) TABLET, COATED [AVION PHARMACEUTICALS, LLC]
Authoritative sources
Reference only — not clinical advice. Verify against current FDA labeling and consult a licensed provider. About half of pediatric drug use is off-label and is not reflected in FDA labels; absence of pediatric information does not mean a medicine is unused or unsafe in children.