Comparing Magnesium Oxide vs Magnesium Sulfate

View side-by-side comparisons of medication uses, ratings, cost, side effects and interactions.
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Magnesium oxide

Magnesium sulfate

Prescription and OTC

Prescribed for Hypomagnesemia, Constipation, GERD, Duodenal Ulcer, Indigestion, Pathological Hypersecretory Disorder, Stomach Ulcer, Urinary Tract Stones. Magnesium oxide may also be used for... View more

Prescription and OTC

Prescribed for Hypomagnesemia, Ventricular Arrhythmia, Seizure Prevention, Barium Poisoning. Magnesium sulfate may also be used for purposes not listed in this medication guide.

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Ratings & Reviews

Magnesium oxide has an average rating of 8.2 out of 10 from a total of 21 ratings on Drugs.com. 71% of reviewers reported a positive effect, while 14% reported a negative effect.

Magnesium sulfate has an average rating of 7.0 out of 10 from a total of 6 ratings on Drugs.com. 67% of reviewers reported a positive effect, while 33% reported a negative effect.

View all 21 reviews

View all 6 reviews

Side Effects Experienced by Users Side effects are reported in Drugs.com user reviews and not clinically verified.

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Drug Class

Minerals and electrolytes

Generic Availability

Lower cost generic

Pricing and Coupons * Prices are without insurance

Quantity	120 tablet
Strength	400 mg
Per unit^*	$0.10 - $0.15
Cost^*	$12.02 - $17.59

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Quantity	50 mL
Strength	50%
Per unit^*	$0.37
Cost^*	$18.72

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Dosage Forms

Oral tablet

Injectable solution
Intravenous solution

Half Life Drug half-life is the time required for plasma concentration to reduce to half its original value.

N/A

CSA Schedule ¹ View glossary of CSA terms

Not a controlled drug

Is not subject to the Controlled Substances Act.

Not a controlled drug

Is not subject to the Controlled Substances Act.

Pregnancy Category

Category C Risk cannot be ruled out

See the full pregnancy warnings document.

Category D Positive evidence of risk

See the full pregnancy warnings document.

Drug Interactions

A total of 230 drugs are known to interact with Magnesium oxide:

10 major drug interactions (24 brand and generic names)
128 moderate drug interactions (1313 brand and generic names)
92 minor drug interactions (477 brand and generic names)

A total of 106 drugs are known to interact with Magnesium sulfate:

13 major drug interactions (37 brand and generic names)
92 moderate drug interactions (489 brand and generic names)
1 minor drug interactions (2 brand and generic names)

Alcohol/Food/Lifestyle Interactions

No known alcohol/food interactions. This does not necessarily mean no interactions exist. Always consult your healthcare provider.

Disease Interactions

Renal dysfunction

First Approval Date

N/A

WADA Class View classifications

N/A

More Information

Patient Resources

Magnesium oxide uses

Magnesium sulfate uses

Professional Resources

N/A

¹ The Controlled Substances Act (CSA) schedule information displayed applies to substances regulated under federal law. There may be variations in CSA schedules between individual states.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Medical Disclaimer

Comparing Magnesium Oxide vs Magnesium Sulfate

See also:

Protonix

MiraLAX

Ozempic

Nexium

Pepcid

Colace

Linzess

Prilosec

Carafate

Dulcolax

Further information

Comparing Magnesium Oxide vs Magnesium Sulfate

See also:

Further information

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