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Magnesium Chloride

Generic: Leucine, Phenylalanine, Lysine, Methionine, Isoleucine, Valine, Histidine, Threonine, Tryptophan, Alanine, Glycine, Arginine, Proline, Serine, Tyrosine, Sodium Acetate, Dibasic Potassium Phosphate, Magnesium Chloride, Sodium Chloride, Calcium Chloride, Dextrose

Verified·Apr 23, 2026
Manufacturer
Hospira
NDC
67457-134
RxCUI
800998
Route
INTRAVENOUS
ICD-10 indication
E83.42

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About Magnesium Chloride

Magnesium chloride is a mineral supplement used to prevent and treat low amounts of magnesium in the blood. Magnesium is a vital nutrient that the body needs for the normal functioning of cells, nerves, muscles, bones, and the heart. Most people get enough magnesium from a balanced diet, but certain health conditions can cause the body to lose magnesium faster than it can be replaced. This medication helps restore healthy levels to support essential physiological processes and maintain overall health. Doctors typically prescribe this medication for patients with chronic conditions such as gastrointestinal disorders or alcoholism. It is also used for individuals taking certain medications, like diuretics or proton pump inhibitors, that may deplete magnesium stores over time. Depending on the severity of the deficiency, it may be administered as an oral tablet, a liquid solution, or through an injection in a clinical setting. Maintaining proper magnesium levels is crucial for preventing symptoms like muscle cramps, fatigue, and irregular heart rhythms.

Copay & patient assistance

Detailed copay and financial assistance information is not publicly available for this medication at this time. Please consult your pharmacist or the manufacturer's official patient support program for more details.

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Cost Plus Drug Company

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GoodRx

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NeedyMeds

Independent nonprofit directory of patient assistance programs, copay cards, and charity co-pay foundations.

Search for Leucine, Phenylalanine, Lysine, Methionine, Isoleucine, Valine, Histidine, Threonine, Tryptophan, Alanine, Glycine, Arginine, Proline, Serine, Tyrosine, Sodium Acetate, Dibasic Potassium Phosphate, Magnesium Chloride, Sodium Chloride, Calcium Chloride, Dextrose →

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Prescribing information

From the FDA-approved label for Magnesium Chloride. Official source: DailyMed (NLM) · Label effective Oct 15, 2021

Indications and usage
INDICATIONS As an electrolyte replenisher in magnesium deficiencies.
Dosage and administration
DOSAGE AND ADMINISTRATION For intravenous infusion: 4 grams in 250 mL of 5% Dextrose Injection, at a rate not exceeding 3 mL per minute. Serum magnesium levels should serve as a guide to continued dosage.
Contraindications
CONTRAINDICATIONS Magnesium Chloride Injection should not be administered if there is renal impairment, marked myocardial disease or to comatose patients.
Warnings
WARNING Do not use if a precipitate is present.
Adverse reactions
ADVERSE REACTIONS Flushing, sweating, sharply lowered blood pressure, hypothermia, stupor and ultimately respiratory depression.
Use in pregnancy
Pregnancy Animal reproduction studies have not been conducted with magnesium chloride. It is also not known whether magnesium chloride can cause fetal harm when administered to a pregnant woman or can affect reproduction capacity. Magnesium Chloride should be given to a pregnant woman only if clearly needed.

Label text is reproduced as-is from the FDA-approved label. We do not paraphrase, summarize, or omit. Content above is for informational purposes only and is not medical advice. Always consult your prescribing clinician or pharmacist before making decisions about your medication.

Conditions we've indexed resources for

Click a condition to see copay cards, grants, and PA rules specific to it. For the full list of FDA-approved indications, see Prescribing information above.

Prior authorization & coverage

PayerPAStep therapyCopay tier

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Medicare Part D

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How this page is sourced

  • Drug identity verified against openFDA NDC Directory.
  • Label text (when shown) originates from NLM DailyMed.
  • Copay and assistance URLs verified periodically; if you hit a broken link, tell us.