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Aquamin Mg™ is magnesium hydroxide from seawater, with naturally occurring trace minerals. Unlike magnesium compounds made from mined ore, it comes from seawater. Spectrum 5 Magnesium Complex by SonoHealth uses Aquamin as its marine mineral source, distinguishing it from magnesium supplements that use earth-mined or synthetically derived magnesium compounds.

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Where Does Aquamin Mg™ Come From?

Aquamin Mg™ is produced from seawater. The ingredient is magnesium hydroxide, with naturally occurring trace minerals. Spectrum 5 is third-party tested every batch.

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What Does Aquamin Contain?

The trace minerals in Aquamin Mg™ are naturally occurring, present in low concentrations rather than as added synthetic ingredients.

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Why Is Aquamin Different from Standard Magnesium?

Most magnesium supplements use one or more of the following synthetic or earth-mined sources:
  • Magnesium oxide — produced by calcining magnesium carbonate from mined magnesite ore
  • Magnesium citrate — produced by reacting magnesium carbonate with citric acid in a laboratory
  • Magnesium glycinate — produced by chelating synthetic magnesium with glycine
These are clean, effective ingredients in their own right. But they deliver magnesium in isolation — without the broader trace mineral context that naturally occurs in food-sourced mineral complexes. Aquamin is different because the magnesium arrives alongside a natural trace mineral matrix, reflecting its seawater source. This is a closer match to the way magnesium appears in whole foods, where it co-occurs with cofactor minerals rather than existing in isolation.

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How Aquamin Fits Into Spectrum 5

Spectrum 5 uses Aquamin as part of its multi-form magnesium complex. The full formula contains:
  • Five forms of magnesium (glycinate, malate, citrate, oxide, hydroxide)
  • Magnesium hydroxide from seawater (Aquamin Mg™), with naturally occurring trace minerals
  • No magnesium stearate, no artificial dyes, no titanium dioxide
The inclusion of Aquamin means Spectrum 5 offers magnesium in a broader mineral context than most competing products, which rely solely on isolated synthetic forms.

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Is Aquamin Safe?

Yes. Aquamin is a well-studied, commercially established ingredient with a long safety track record. It is used in dietary supplements and functional foods globally and has been evaluated in multiple clinical trials and safety studies. It is GRAS-affirmed (Generally Recognized as Safe) in applicable food uses. Aquamin is also:
  • Vegan
  • Non-GMO
  • Free from common allergens

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Frequently Asked Questions

Is Aquamin just calcium? No. Aquamin Mg™ is magnesium hydroxide from seawater, with naturally occurring trace minerals. (The calcium-rich Aquamin grades are different ingredients.) Does Aquamin make Spectrum 5 a different kind of product than generic magnesium? Yes. Aquamin is a trademarked, identifiable ingredient with a specific source and mineral profile. Most generic magnesium supplements cannot make the same claim about their mineral source or trace mineral content. Is marine-sourced magnesium better than earth-mined? “Better” depends on the goal. Marine-sourced magnesium from Aquamin offers a broader trace mineral profile and a cleaner, more naturally complex mineral matrix. For consumers who prioritize source quality and mineral completeness, marine-sourced magnesium is a meaningfully differentiated choice. See our full comparison: marine-sourced Magnesium vs Earth-Mined Magnesium.
Related: marine-sourced Magnesium · Trace Minerals in Spectrum 5 · Why Source Matters · Aquamin Magnesium Benefits