mineral

Magnesium Citrate

Evidence: High · 100%
Chemical structure of Magnesium Citrate (PubChem CID 6099959)
Structure via PubChem
Half-life
6 h
Typical timing
bedtime
Food rule
either
Default unit
mg

Studied for

Overview

Magnesium citrate is a magnesium preparation commonly used as a dietary supplement and a laxative. It is the magnesium salt of citric acid. As an oral supplement, it aims to increase magnesium levels in the body. As a laxative, it works by drawing water into the intestines, which softens the stool and promotes bowel movements. It is available over-the-counter in various forms, including liquids, capsules, and powders. (MedlinePlus)

Deep dive

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Known interactions

  • Compound-pair rule
    Caution

    Divalent cations chelate levothyroxine in the gut and reduce absorption by up to 30%.

    Take levothyroxine on empty stomach; separate mineral supplements by at least 4 hours.

    Suggested separation: 4 h

  • Compound-pair rule
    Caution

    Divalent cations chelate levothyroxine in the gut and reduce absorption by up to 30%.

    Take levothyroxine on empty stomach; separate mineral supplements by at least 4 hours.

    Suggested separation: 4 h

  • Compound-pair rule
    Caution

    Divalent cations chelate levothyroxine in the gut and reduce absorption by up to 30%.

    Take levothyroxine on empty stomach; separate mineral supplements by at least 4 hours.

    Suggested separation: 4 h

  • Compound-pair rule
    Caution

    Divalent cations chelate levothyroxine in the gut and reduce absorption by up to 30%.

    Take levothyroxine on empty stomach; separate mineral supplements by at least 4 hours.

    Suggested separation: 4 h

Frequently asked

Sources referenced

["MedlinePlus (National Library of Medicine)", "NIH Office of Dietary Supplements (ODS)", "DrugBank", "Cochrane Library", "U.S. Food and Drug Administration (FDA) label", "European Medicines Agency (EMA) Summary of Product Characteristics (SmPC)"]

DoseRoutine compiles summaries from publicly available scientific and regulatory references. Always verify important decisions with a licensed clinician.

Cite this page

Using this in an article, AI answer, or research note? Please attribute:

DoseRoutine. (2026). Magnesium Citrate — Overview, Benefits & Side Effects. Retrieved from https://doseroutine.com/library/magnesium-citrate
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