--- title: "Magnesium vs Melatonin: Side-by-Side Comparison (2026)" url: https://www.bodyhackguide.co/compare/magnesium-vs-melatonin description: "Compare Magnesium vs Melatonin side by side. We earn a commission on some vendor links. Mechanism, half-life, dose range, side effects and prices." lang: en --- Skip to content Compare notes on r/BodyHackGuide (https://reddit.com/r/bodyhackguide) Compare notes with other researchers. Join r/BodyHackGuide (https://reddit.com/r/bodyhackguide) # Magnesium vs Melatonin Side-by-side comparison of Magnesium and Melatonin: mechanism, half-life, dose range, safety profile, and vendor pricing. Magnesium: no price on file Melatonin from $44.99 ## Price snapshot ### Magnesium Current low — 7-day low — not enough history yet 30-day low — not enough history yet 30-day change — not enough history yet ### Melatonin Current low $44.99 current listings 7-day low — not enough history yet 30-day low — not enough history yet 30-day change — not enough history yet ## 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… No vendor price on file. Full Magnesium profile (https://www.bodyhackguide.co/compound/magnesium) ## Melatonin Melatonin (chemical name N-acetyl-5-methoxytryptamine) is an endogenous neurohormone synthesized primarily by the pineal gland and, in smaller quantities, by the retina, gut, skin, bone marrow, lymphocytes, and… **Lowest listed price:** $44.99 across 1 listing Full Melatonin profile (https://www.bodyhackguide.co/compound/melatonin) ## Side-by-side comparison | Attribute | Magnesium | Melatonin | | --- | --- | --- | | Category | Foundational | Sleep & Circadian | | Research Stage | Preclinical | Preclinical | | Mechanism of Action | Magnesium acts through a larger number of mechanisms than any single other nutrient cofactor, reflecting its role as an obligatory partner for a substantial fraction of all ATP-dependent biology. The principal mechanisms fall into six overlapping categories:… | Melatonin operates through at least four distinct mechanistic pathways that together account for its diverse physiological effects: (1) MT1/MT2 receptor activation for circadian and sleep effects; (2) nuclear receptor (ROR/RZR) modulation for anti-inflammatory… | | Half-Life | — | — | | Typical Dose Range | — | — | | Dosing Frequency | — | — | | Administration | — | — | | Side Effects | Oral magnesium supplementation is among the safest nutrient interventions in clinical medicine for adults with normal renal function. The primary dose-limiting side effect is osmotic diarrhea, which is form-dependent and dose-dependent. Magnesium oxide… | Melatonin has an exceptionally wide safety margin and has been used in clinical doses up to 300mg/day in oncology protocols without serious acute toxicity. However, side effects are common at supraphysiological doses (3mg and above) and are often misattributed… | | Molecular Weight | — | — | | Common Vial Sizes | — | — | ## Price tracking Tracking Melatonin prices since September 7, 2026. Trend chart unlocks once we have price snapshots from more than one day. ## Frequently asked ### What's the difference between Magnesium and Melatonin? Magnesium is a foundational that magnesium acts through a larger number of mechanisms than any single other nutrient cofactor, reflecting its role as an obligatory partner for a substantial fraction of all…. Melatonin is a sleep & circadian that melatonin operates through at least four distinct mechanistic pathways that together account for its diverse physiological effects: (1) mt1/mt2 receptor activation for circadian…. The two differ in mechanism, half-life (not reported vs not reported), and typical dose range. ### Which has the longer half-life, Magnesium or Melatonin? Magnesium has a half-life of not reported. Melatonin has a half-life of not reported. Longer half-lives generally mean less frequent dosing but slower on/off kinetics. ### Can you stack Magnesium and Melatonin? Stacking depends on mechanism overlap, safety profile, and goals. Magnesium and Melatonin should only be stacked after reviewing each compound's individual protocol page, side effect profile, and any published interaction data. Use the BodyHackGuide stack builder for a structured review before combining research compounds. ## See current vendor prices Listings from the vendors we track. Prices change often, so check the vendor before you buy. Magnesium prices: https://www.bodyhackguide.co/compound/magnesium?tab=prices Melatonin prices: https://www.bodyhackguide.co/compound/melatonin?tab=prices Compare all compounds: https://www.bodyhackguide.co/compare ### Before you buy Magnesium or Melatonin Check the vendor trust score. Every supplier we track is rated 0-100 on COA verification, payment transparency, shipping, reviews, and listings: one published, reproducible methodology, applied to every vendor. View Vendor Scorecard (https://www.bodyhackguide.co/vendors/scorecard) ## Related comparisons Magnesium vs Zinc: https://www.bodyhackguide.co/compare/magnesium-vs-zinc Melatonin vs Glycine: https://www.bodyhackguide.co/compare/melatonin-vs-glycine DSIP vs Melatonin: https://www.bodyhackguide.co/compare/dsip-vs-melatonin **Research use only.** BodyHackGuide is a research and price-comparison reference. The compounds discussed on this page are not approved by the FDA for human consumption and are sold strictly for laboratory research. Prices shown are pulled from vendor listings tracked on BHG and are subject to change. We earn an affiliate commission on some outbound clicks, and every vendor is ranked on the same public, reproducible methodology. See editorial standards (https://www.bodyhackguide.co/editorial-standards) and affiliate disclosure (https://www.bodyhackguide.co/affiliate-disclosure). 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