Supplement Scholar
Mineral

Magnesium Sulfate (IV)

Buy on Amazon ↗

Affiliate link: we may earn a commission at no extra cost to you. Disclosures

Magnesium Sulfate (IV). Reference IV form used in eclampsia and acute asthma.

How it works. Calcium channel modulator and bronchodilator at high serum levels.

What the research supports. 1 graded claims. Strongest: Prevents eclamptic seizures (strong).

How much to take. Typical dose: Rx only.

Side effects and interactions. 1 medication interaction listed. Serious: Requires medical setting.

Stacking. Pairs well with Omega-3, CoQ10.

Common forms. Available as Chelated form (glycinate, bisglycinate, citrate, malate), Inorganic salt (oxide, sulfate, chloride), Liquid ionic solution, Topical or transdermal preparation.

Key studies. 8 studies cited. The strongest are listed with links to PubMed.

Community. Experiences from people who have tried Magnesium Sulfate (IV). Anecdotes are not medical advice.

Magnesium Sulfate (IV). Reference IV form used in eclampsia and acute asthma.

Molecular structureMgO4S · 120.37 g/mol

What it is

Reference IV form used in eclampsia and acute asthma.

Food sources

Whole foods (leafy greens, legumes, nuts, seeds, seafood, animal proteins)Fortified foods such as cereals, breads, plant milks, and table saltMineral supplements as chelates, citrates, glycinates, or inorganic salts

Goals

Cardiovascular HealthGeneral Wellness

How it works

Calcium channel modulator and bronchodilator at high serum levels.

Pathways

  • Calcium channel modulator
  • bronchodilator at high serum levels

Effects

  • ↓eclamptic seizures decreases

What the research supports

Prevents eclamptic seizuresstrong

Strong: consistent results across large trials or meta-analyses. Moderate: several trials, mostly positive. Limited: small or mixed studies. Preclinical: animal or cell research only.

Typical dose
Rx only
TimingConsistent daily timing recommended; split larger doses if GI tolerance is a concern.
With foodEither with or without food.
Best formMost evidence is based on the chelated form (glycinate, bisglycinate, citrate, malate) form.
Shop Magnesium Sulfate (IV) on Amazon ↗

As an Amazon Associate I earn from qualifying purchases. Look for USP, NSF or Informed Sport seals before you buy.

Side effects & interactions

Common side effects

  • Flushing
  • Warmth

Serious

  • Requires medical setting

Medication interactions

Prescription medications (general)minor

Always disclose Magnesium Sulfate (IV) use to your prescriber — additive, antagonistic, or pharmacokinetic interactions are possible.

Check any supplement–medication combination with your pharmacist before starting.

Combines with

Pairs well

  • Omega-3Anti-inflammatory cardiovascular synergy.
  • CoQ10Supports mitochondrial energetics in cardiac tissue.

Common forms

  • Chelated form (glycinate, bisglycinate, citrate, malate)
  • Inorganic salt (oxide, sulfate, chloride)
  • Liquid ionic solution
  • Topical or transdermal preparation

Key studies

8 studies cited in total.

PubMed: Magnesium Sulfate (IV) — Prevents eclamptic seizures ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Magnesium Sulfate (IV) and "Prevents eclamptic seizures". Filter by RCT, meta-analysis, or year on the results page.

PubMed: Magnesium Sulfate (IV) — randomized controlled trial ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Magnesium Sulfate (IV) and "randomized controlled trial". Filter by RCT, meta-analysis, or year on the results page.

PubMed: Magnesium Sulfate (IV) — meta-analysis ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Magnesium Sulfate (IV) and "meta-analysis". Filter by RCT, meta-analysis, or year on the results page.

Discussion

Loading discussion…