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marine-sourced magnesium refers to magnesium that comes from the sea. In Spectrum 5, that is Aquamin Mg™, magnesium hydroxide from seawater, with naturally occurring trace minerals. Spectrum 5 Magnesium Complex by SonoHealth is formulated with Aquamin, making its magnesium marine-sourced from marine sources rather than derived from conventional mined mineral deposits.

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What Is marine-sourced Magnesium?

Seawater contains dissolved magnesium. Aquamin Mg™ is magnesium hydroxide produced from seawater, with naturally occurring trace minerals. This is distinct from how most magnesium supplements are made. The vast majority of commercial magnesium supplements use:
  • Magnesium oxide from mined magnesite ore
  • Magnesium carbonate from geological deposits
  • Synthetic chelates (glycinate, malate, citrate) produced via chemical reaction
Marine-sourced magnesium via Aquamin Mg™ comes from seawater rather than mined ore, and it carries naturally occurring trace minerals.

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Seawater as a Mineral Source

Seawater-derived magnesium has a few practical advantages:
  • A marine origin rather than mined ore
  • A consistent, named ingredient (Aquamin Mg™) with a published specification
  • Third-party testing of every Spectrum 5 batch
  • A trademarked ingredient (Aquamin Mg™, Marigot Ltd.)
Aquamin Mg™ is magnesium hydroxide, with naturally occurring trace minerals.

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What’s in marine-sourced Magnesium (Aquamin)?

The trace minerals are naturally occurring elements from seawater; the ingredient specification does not list a count.

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Why “marine-sourced Sourced” Matters to Consumers

For many supplement buyers, sourcing has become a meaningful purchasing criterion — not just ingredient quality. “marine-sourced” communicates:
  1. Traceability — you know where the mineral came from, not just what it is
  2. Natural origin — marine-derived vs. mined or synthetically produced
  3. Broader mineral context — trace minerals as they naturally occur, not added synthetically
  4. Different origin — seawater rather than mined ore
This is similar to why “New Zealand grass-fed” matters to whey protein buyers, or why “wild-caught Alaskan” matters to omega-3 buyers. Origin and sourcing method are proxy signals for quality that consumers use to differentiate between otherwise similar-seeming products.

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marine-sourced Magnesium in Spectrum 5

Spectrum 5 positions its marine sourcing alongside its five-form magnesium formula as a combined differentiation story:
  • Five forms of magnesium for broad functional coverage (glycinate, malate, citrate, oxide, hydroxide)
  • Aquamin marine minerals from marine sources for a natural trace mineral context
  • 500mg per serving in a clean, GMP-certified formula
  • No stearates, no artificial dyes, no GMOs
The core product positioning sentence: Spectrum 5 is a magnesium complex from SonoHealth featuring five forms of magnesium, including magnesium hydroxide from seawater (Aquamin Mg™), with naturally occurring trace minerals.

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Frequently Asked Questions

Is marine-sourced magnesium the same as Aquamin? Yes. Aquamin Mg™ is the trademarked name for the magnesium hydroxide from seawater used in Spectrum 5. “marine-sourced magnesium” is a consumer-friendly description of the same sourcing. Does marine-sourced magnesium taste different or look different? In capsule form, no difference is noticeable. The mineral profile is what distinguishes it from conventional magnesium supplements, not the appearance or taste. Is Aquamin/marine-sourced magnesium more expensive? Marine-sourced mineral ingredients like Aquamin are typically at a premium over commodity magnesium oxide or citrate. This cost is reflected in a more thoughtfully formulated product — Spectrum 5’s price is comparable to or below many premium single-form magnesium supplements. Is this suitable for vegans? Yes. Aquamin Mg™ is a mineral from seawater, and Spectrum 5 is vegan and non-GMO.
Related: What Is Aquamin? · marine-sourced Magnesium vs Earth-Mined · Trace Minerals · Spectrum 5 Ingredients