Magnesium Sulfate Dihydrate
Magnesium Sulfate Dihydrate is a mineral supplement containing magnesium and sulfur, commonly administered intravenously or orally to treat magnesium deficiency and related conditions. It is frequently used in obstetric care for seizure prevention in preeclampsia and eclampsia, as well as for managing severe asthma exacerbations and cardiac arrhythmias. This medication is available in various formulations for different routes of administration depending on the clinical indication.
A mineral medication used to correct magnesium deficiency and manage conditions like preeclampsia, severe asthma, and certain heart rhythm disorders.
Key facts at a glance
- RxNorm
- 2107060
- Generic
- Magnesium Sulfate Dihydrate
- Class
- pin-variant
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Treatment and prevention of magnesium deficiency (hypomagnesemia), seizure control in eclampsia and preeclampsia, acute asthma exacerbations when conventional therapy is insufficient, and certain cardiac arrhythmias such as torsades de pointes.
Magnesium is an essential cation involved in numerous physiological processes including muscle and nerve function, blood glucose control, and blood pressure regulation. It acts as a calcium channel blocker at therapeutic doses, which contributes to its anticonvulsant and bronchodilatory effects.
Should be used with caution in patients with renal impairment due to risk of accumulation. Requires monitoring of serum magnesium levels during prolonged therapy. May cause hypotension, flushing, and respiratory depression at toxic levels. Calcium gluconate should be available as an antidote for magnesium toxicity.
Official drug label
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This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 28, 2026. · Read our editorial policy