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    Foundational · price comparison

    Where to Buy Magnesium: Cheapest Vendor in 2026

    Magnesium pricing across every research peptide vendor we track, ranked by price per mg. Prices change often, so check the vendor before you buy.

    No in-stock Magnesium listings right now.

    Vendor stock changes often, so check back. Use the compound profile to track research progress in the meantime.

    Research profile

    Mechanism, dosing, half-life, peer-reviewed studies for Magnesium.

    Coupon codes

    Every active vendor coupon for Magnesium, click-to-copy.

    Reconstitution calculator

    Vial size + BAC water → concentration, syringe units, doses per vial.

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    What is Magnesium?

    Magnesium is the fourth most abundant cation in the human body and the second most abundant intracellular cation after potassium, with approximately 25 grams present in a typical adult—roughly 60% stored in bone, 27% in muscle, 6-7% in other soft tissues, and less than 1% in extracellular fluid including serum. Despite this substantial total-body load, magnesium deficiency is extraordinarily comm… Read the full Magnesium research profile

    Buying Magnesium: FAQ

    Where can I buy Magnesium online?

    Magnesium is currently between in-stock listings across the vendors we track. Bookmark this page and check back, since vendor stock changes often.

    What's the cheapest price for Magnesium?

    No vendor we track lists it as in stock, so there is no price to compare. Check back when listings come back in stock.

    Is buying Magnesium online safe?

    Vendor safety varies. BodyHackGuide scores every vendor on a 0-100 Trust Score (COA verification, payment transparency, community feedback, shipping practices). This page ranks listings by price per mg, not by score, so check each vendor's score breakdown on its BodyHackGuide profile before you buy.

    Do I need a prescription for Magnesium?

    Magnesium is sold for research-use-only by the vendors on this page; no prescription required for research purchases. None of these vendors sell Magnesium for human consumption, and BodyHackGuide doesn't promote off-label use. Always consult a licensed practitioner before any compound enters a clinical context.

    Affiliate disclosure. BodyHackGuide earns a commission on some of its links, at no additional cost to you. Vendor rankings are based on price per mg from the listings we track. We don't accept payment for editorial placement. See our full affiliate disclosure .

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